YOU don't like. Whether youre carrying tools of the trade or packing up the 44 for an extended trip, your vehicle can become dangerous and illegal if it exceeds the allocated gross vehicle mass (GVM). and Overloaded. by RV Daily September 29, 2020, 10:30 pm. Chassis overhang 5. WE WILL NEED TO FIT 13MM CHAIN WHICH HAS A CAPACITY OF 3500 KG TO COVER THE NEW ATM OF 2800 KG. Cheers Dereck check us out at Lapping the Island. Read below about a real life example lapping Australia in a 200 series Landcruiser. . The weight limit of the vehicle and any trailer combined. It's a simple one to measure as its the absolute total weight your caravan can weigh. Rims: The rim size, load rating and type of construction (alloy or steel). GVM upgrades to raise the carrying capacity of your vehicle. Assessment includes braking and stability control testing to ensure that each vehicle and package combination maintains all of the vehicles safety standards while capable of carrying a greater payload. Before you order a caravan ATM upgrade, the first thing to do is get your caravan and tow vehicle weighed when they are both fully loaded. Get the best stories straight into your inbox! For example, if a trailer is rated to 750kg GVM and the trailer weight is 250kg, then you could place a 500 kg load onto that trailer, which will give you . vehicles fitted with a GVM upgrade by a second stage vehicle manufacturer prior to first registration) it does affect vehicles in NSW that are already registered. AME Automotive your local qualified Canning Vale mechanics and car servicing Perth. Remember, it is a different story if the caravan is over its ATM and the rig is over its GCM, so you need to get the bigger picture first. Would you like to add shock absorbers for a better ride? From first contact to completion could all happen within a week. GVM upgrade certification - Caravan ATM rating upgrade certification - All vehicle engineering certification. Just a little bit of possible help for Victorian caravan owners. Fit for purpose. We can also provide GVM upgrade solutions for older and imported vehicles that don't have pre-approved upgrade kits. Installing Full Air Bags. This car has a standard kerb weight of 3452kg and a GVM of 5216kg giving us 1764kg of weight we can put on the vehicle. AME Automotive has been getting a lot of enquiries about compliance and GVM upgrades. To upgrade a vehicle which is already registered, you can still order the same package, however youll then need to have the vehicle independently engineered. View 15 images The 2022 Isuzu MU-X four-wheel-drive has the highest claimed braked towing capacity among its direct rivals - rated at 3500kg rather than the class average of 3000kg or 3100kg. This means the max you can tow before reaching GCM is only 2900kg. This field is for validation purposes and should be left unchanged. I'm new to your forum, so hello. You know what I mean. - Tess Major. First, the caravan must be at the same attitude or angle as it is when attached to the tow vehicle. from 6 to 10 yrs ago. Lovells Suspension. We cover the greater Brisbane area from Caboolture, Ipswich, Ormeau and everywhere in between. Required fields are marked *. We started off as novice caravanners & traveled unknowingly over weight. GVM+ Suspension Kit Upgrades From Pedders Check out our range of Pedders Upgrade GVM Kits and more for your vehicle. Check out the video of the process and install! A legal GVM is set for all vehicles as part of the Australian Design Rules (ADR) approval process. Web Design by Mediamojo. That's why I write these posts. Weighed in at 5166kg. Read next Caravan Weightcheck how do the numbers stack up? NOT the imaginary ones they put on there to get you towing bigger. Transmod helps us ensure that the caravan upgrade projects that we undertake comply with ADR 62 and VSB1. One of Daves recent customer did exactly this and was able to pull 63kg out of the caravan in the blink of an eye. Step 3. All the items below have to be assessed to ensure they comply at the increased ATM: It is not mandatory to have your trailer weighed for certification purposes; however, it is highly recommended to have an accurate idea of the actual weight of your trailer in the maximum loaded condition. Seeing the growing market demand for off-road caravans and the demand for vehicles to tow them legally, Queenslands recently re-branded Cruisemaster (formerly Vehicle Components) has established a Towing Performance Centre (TPC) offering everything from suspension servicing to complete retrofits and ATM upgrades for caravans and their tow vehicles. This process ensures that your vehicle is GVM legal in all states of Australia. We gladly accept card payment after certification with mobile EFTpos facility. 98% overweight\size. From being one of the statistics. In Australia, by law the un-braked towing capacity of a car is always capped at 750kg. THEY are the numbers that should be stamped on current veh's. Some GVM upgrades change more than suspension, but its not normally the case. Go any where vehicle with great comfort & safety for less that a Toyota. JU Design can provide ATM upgrades to your caravan based on the major components of the vehicle. Now that you know what all the weights mean, the next thing to do is get your caravan weighed. GVM upgrades are critical for being safe on the road. Steps to have your caravan ATM upgraded: Contact JU Design for an inspection appointment on 0400123852 or admin@judesign.com.au Bring your caravan and towing vehicle to our new facility located at 27 Old Creswick Road Wendouree for an inspection Step 2. The team at AME Automotive will ensure the upgrade so that it can be certified by the Department of Infrastructure and Transport. These have been purchased from reliable manufacturers that have performed their own testing process to test load capacity. Tare Weight (TARE) Tare weight is the total dry weight of the caravan as it leaves the factory with all accessories fitted, including empty water tanks and empty gas bottles. Chains: The chain size, number of chains, and markings (Aust. For instance, if your rig is under its GCM, but the caravan is over its ATM, then the option is there to look into an ATM upgrade. The legal weight limit of your vehicle including all passengers,luggage, accessories and fuel. We work closely with One of the most common modifications that us 4X4 Enthusiasts make to our vehicles is the upgrading of suspension componentry. 252.2 km Directions. Does increasing my GVM rating affect registration cost? It appears that your way is only best. For example, if a trailer is rated to 750kg GVM and the trailer weight is 250kg, then you could place a 500 kg load onto that trailer, which will give you the total of 750 GVM. With dozens of ARB stores and stockists around Australia, its easy to get a quote on a personalised Old Man Emu suspension system for your 4WD. GVM. They've even said if we need we can do the hands-on training and then do the theory after. On the van side, the actual process varies depending on what we start with. Your email address will not be published. The whole idea is to select parts with a load capacity that exceeds the prospective GVM rating of the trailer. Located at its Geebung, Brisbane headquarters, the Cruisemaster TPC harnesses the resources of a coterie of suppliers including Redarc, Airbag Man and Flash Diesel to upgrade not only a caravans or camper trailers suspension, but also its electrical system to allow owners to carry more, or their vans to better survive an off-road beating while accessing remote areas. The heavier the trailer, the more expensive it is during registration. QLD Department of Transport and Main Roads Approved Engineer. The best bit is that we have quick turn arounds and even space for you to stay in your caravan while the work is being carried out if you need to. In some states, these upgrades can be done to any old 4X4 where a . Gross Combined Mass Bring your vehicle into AKZ Vehicle Engineering and Design Service for a professional GVM-GCM upgrade. Discover ARB's all-new Slide Kitchen A GVM upgrade is achieved by fitting a purposely packaged solution of shock absorbers, springs and other suspension components which are tested and accredited by an independent engineer. Coil Springs . Give us a call today or pop into our shed in Coolum Beach on the beautiful Sunshine Coast to discuss your options and find out how we can help improve your caravan for better load distribution, towing, maneuvering or just a tidy up. We know exactly what is required of the perfect 44 vehicle,and the usable payload of many 4X4 vehicles today is minimal. Yes you are correct. The only thing that would be nice but a luxury would be to have water in the 2x95lt tanks but being solo I cope very well with 2x10lt water containers and topping up when needed. The best advice is to get good advice before you decide on a path to follow. Leaving nothing at all for Generator, tools , hoses, etc etc. chassis rust) we will provide you with alternative options. Remember, however, that in order to be compliant, you need to ensure you are under all the compliance ratings: Towball Mass, Gross Trailer Mass, and Aggregate Trailer Mass. Therefore loading and unloading of weight on the rear of a vehicle, such as unhitching a trailer or removing your touring gear, can play havoc with weight distribution across your front axles in accordance with the manufacturers front axle load limits. The process is very complex and thorough and can only be completed by a licenced engineer who also needs to be an accredited person with the relevant state transport authority. The possibilities are Limitless so give us a call today and we can discus all the crazy and wild options avaiable (we can also do tame ones if this is more your style). An ATM upgrade to 3400kg was needed and after getting nowhere with Jayco head office, the following describes how it was successfully achieved. If all goes to plan, a Modification Plate is attached to the caravan, beside the original compliance plate, with the relevant paperwork submitted to the State Transport Authority to reflect the new ATM on the caravans registration. For most customers, this value is quickly exceeded when water tanks, luggage, food, tools, bikes, generators, solar panels, dual battery systems, gas bottles and other items are taken into consideration. That's 3 people and some luggage. Our range of 4x4 accessories provides the ultimate one-stop shop to suit fleet vehicles and the occasional weekend tourer, right through to the serious off roader. At Bold Trailer And Caravan Repair Centre (Bold TCRC) we can weigh, inspect and make any necessary modifications to your caravan to increase its GVM/ATM. Safely or otherwise. YES. This added another 100kg for the boat, 50kg for the motor 25kg for fuel/oils and then all the other things that one needs to go boating and fishing. GVM is your car's gross vehicle mass, which decides the maximum load your car is allowed to carry while on the road. The vehicle can then be registered with new increased GVM, ensuring it can be legally used in all states of Australia. Five helpful generator hacks and top tips for travellers. For example, in the case of the Toyota LandCrusier 200 Series vehicles already registered in NSW,GVM upgrades of 4000kg or more will no longer be permitted; the maximum permitted will now be 3650kg. Byeee. They are however more expensive. Through realising the difference between. Switch to the light mode that's kinder on your eyes at day time. Heavier trailers IE More money in their pockets. Your email address will not be published. He has extensive automotive, manufacturing and trailer industry experience, which includes design and development, through to testing independent suspension systems, couplings, off-road trailers and advanced trailer chassis. Your ARB store will be able to point you in the right direction as to who can help perform this task, which is generally very simple. Maximum 3220kg (factory GVM is 2950kg, but we had a GVM upgrade). So lets look at what is involved in an ATM upgrade and how it works. 572.4 km Directions. If you are looking for a quality GVM upgrade nsw or want to know more about If you are GVM upgrade cost, AME Automotive premium GVM upgrade is at your service across Perth. Call Deon on 0408 112 604, or email deon@okajaro.com.au. Save my name, email, and website in this browser for the next time I comment. These ratings and capacities are there for a reason, ensuring the caravan is legal and able to be operated safely. Dealers etc. Welcome to the gang Gunnago Camping, enjoy here and out in the playground. Herewith some contacts if you need help with this: Rod Bailey0407 240 702rod@gvmcheck.com.auShed 4, 6 Quinns Hill Road East, Stapylton, QLD, 4207, David Lewis0477 897 700weightcheck@bigpond.comPO Box 5827, Stafford Heights, QLD, 4053. The GVM+ suspension solution has been designed to ensure that the vehicle is not only fit for purpose but compliant with the road rules, OH+S and insurance requirements set out nationally. Drawbar length 2. There are six compliance ratings that need to be checked, including the Gross Combination Mass, which is the total weight of the caravan and tow vehicle combined. Note, this weight is not removed from the trailer in GCM calculations. GCM. Curious car owners might be keen to know what exactly happens to their car when it goes through a GVM upgrade. We have many optional extras and upgrades for your Tradesman Trailers. what is safe.and what is "I'd like". Whether you simply need safety chains replaced or major structural work done, we know someone that can help. Once the approved suspension system and GVM upgrade compliance plate has been fitted to your vehicle by an authorised Old Man Emu installer, it can be registered according to its new, increased GVM. Everyone is different & everyone has the right to purchase & use what they want or can afford. If my Opinions. Failing to abide by the regulations can invite hefty fines, and loss of your insurance coverage if you get into an accident. The GVM rating is comprised of the weight of the trailer and the maximum load it is capable of supporting. Axle Group Loading (AGL) The AGL records the axle capacity of the caravan and is usually determined by the chassis manufacturer or the axle manufacturer. A GVM upgrade does not change how much weight your vehicle is legally allowed to tow, as it does not increase the Gross Combined Mass (GCM). The original GVM is stated by the vehicle manufacturer because each model is required to meet the standard GVM decided within Australia. At the time of writing, RV Daily is seeking further clarification from NSW Transport Roads & Maritime Services surrounding the GVM changes that have been made. Rego till Nov 2023 Location- Sydney 1981 Jayco Trail Pop Top Caravan 16ft - RVs & Campers - Sydney, Australia | Facebook Marketplace This is particularly helpful for people who already own a trailer, as a GVM upgrade can be a more economical solution over buying a new trailer, and or, losing your house and car to an insurance claim! With a standard Landcruiser weighing in at roughly 2740kg, the standard GVM is only 3350kg. With a fully loaded set up 7885Kg GCM we have experienced between 20 to 24 litres per 100Km. Firstly, dont panic, they have a seriously good look at how you can reduce weight in the caravan. ThreadID: 122627 Views: 7548 Replies: 6 FollowUps: 3. Federal laws do, however, allow for a vehicle's Gross Vehicle Mass (GVM) to be upgraded. They're all still. Our engineers will look over the trailer to ensure it is compatible for a GVM upgrade and that it is going to be a viable long term solution for you. 4x4 Accessories . Chief One Feather (Losing feathers with age). Lovells Special Products Unit 5 / 8 Guernsey St Sandgate NSw 2304 Australia. Toyota LandCruiser 200 (Oct 2015 onwards), Toyota LandCruiser 79 Single (5 star ANCAP). Also 10+ years ago dual cab utes where mostly 2500kg towing max. I was very impressed with this result, because I maintained highway speeds wherever I was legally allowed. by AME Automotive | Sep 7, 2021 | GVM Upgrade. We can also have our onsite tradesman make any repairs to your current tradesman trailer as well. Our highly skilled experts, impeccable service and reliable Repco service network across the nation, we make getting your car's GVM upgraded easy. CONTACT FELK ENGINEERING TODAY 02 4954 6955. With MINIMAL LAWS TO CONTROL THEM. He will come to you to weigh your caravan or . There are also many ratings and sizes of various caravan components that will affect the outcome, lets look at some of them. Switch to the dark mode that's kinder on your eyes at night time. This weight is added to the wheel weights to calculate the empty caravans Tare Weight. Additional basic optional equipment and two or three adult male occupants can easily bring the vehicle close to its legal maximum weight (GVM) in many cases. Select a region to view specific ARB products and stores for your area, Mazda BT-50 2021 on (4x4 and 4x2 Hi Rider), Toyota LandCruiser 200 (Oct 2015 onwards) Series GX / GXL / VX / Sahara, Toyota LandCruiser 200 Series GX / GXL / VX / Sahara, Toyota LandCruiser 79 Series (tray) Single Cab, Toyota HiLux 2020 (August 2020 onwards) (4x4 only). Under 2500Kg Caravans. Old Man Emu GVM Upgrade on the Dmax Reduced Max Towing Capacity. In our opinion Jayco make a great value for money caravan but are far to ridged when it comes to its customers needs. Caravan Weightcheck how do the numbers stack up? CARAVAN & TRAILER ATM UPGRADE Mobile Service - we come to you certification of trailer modifications (ls12) GET LEGAL An ATM upgrade will ensure that your caravan/trailer is compliant at a higher load rating, minimising the risk of facing legal or insurance complications MORE PAYLOAD We are big believers in fit for purpose. These measurements all need to be taken at the same time to ensure the result is correct. We wished to free camp & shower. If the trailer is not suitable (i.e. Like most stories then came along everyones mate Covid-19, we made a mad dash for the border and just like that our trip was done, or was it? In order to achieve the most accurate results, Dave points out a crucial piece of advice. What it does do is help with managing trailer ball weight so you still have a reasonable payload on the vehicle itself; this is of most benefit for trailers in the 2000 to 2500kg weight spectrum. Back To Home Page How To License Your Trailer admin@midlandtrailers.com.au Photo Gallery. So we went looking for a VASS Vic Roads certified engineer who could inspect & approve an ATM increase. Primarily because, the powers that be. As stiff as a board. If you regularly use your vehicle to tow a caravan or carry heavy loads,more than likely its time to consider getting your vehicle a GVM upgrade. We found that we were overweight by a lot and in the end, we had to leave the boat at home with a few other items that we really wanted to bring. Modern vehicles regularly have a payload of anywhere between 500kg 1000kg, however, with 4WD accessories and heavy trailer down ball weights, its not hard to very quickly reach those legal limits. We have one but with a little extra. Melbourne (03) 9706 5200. CAMPER TRAILER GVM UPGRADES GVM upgrades are available at Bold Trailer And Caravan Repair Centre. If the Dmax is fully loaded, the Max Towing Capacity of 3500kg is over the GCM of 6000Kg. A weight upgrade is a process that enables your caravan to legally carry more weight. and hence, Spend more of your money into their pockets. This is the difference between the ATM and the TM and is the amount of weight that can be added to the caravan. 450mm Extension suits 2100mm tray From $6,500 AUD Info. Trailer and caravan Aggregate Trailer Mass Upgrades; Remove the coil springs. GVM stands for Gross Vehicle Mass. 450mm is the perfect length to get the weight balance right for a 2100mm tray, it gives a much better departure angle as there is less rear overhang (when coming down a 4wd track) and still . Understand your caravan and its weight distribution characteristics, Maximise payload that can be legally fitted to your caravan, Contact JU Design for an inspection appointment on 0400123852 or, Bring your caravan and towing vehicle to our new facility located at 27 Old Creswick Road Wendouree for an inspection. Then you add a Bull bar 80-100kg, spotlights 20kg, roof rack 30kg, fridge in the back 40-50kg and we are basically at our maximum GVM. The GTM of the caravan is transmitted to the ground by only the caravan tyres and excludes the mass distributed to the towing vehicle through the coupling. Contact us us today to discuss your options for GVM, GCM or Tow bar upgrades. We offer a full caravan ATM upgrade service here at RV Service Centre Toowoomba - where we can legally increase the ATM and/or GTM of your caravan, to ensure you van is legal. GVM ratings also change the TARE ratings. Your email address will not be published. Maximum 5950. FAQ's. ATM Upgrades. Car manufacturers these days have low original GVM value. This may require work, for instance, to reinforce the chassis or drawbar, or upgrade or increase the size of a chassis component such as brakes or axles in order for the assessment to continue. We'd ALL like to take everything "I might need". In the Raptor, towing 1,500KG, I averaged 11.8L/100KM over the 1000+Km I drove. Is this the fault of the novice caravaner or the manufactures & retailers that should be aware of what's safe & legal. do. Also 10+ years ago dual cab utes where mostly 2500kg towing max. Submitted: Monday, Apr 24, 2006 at 05:51. The GVM is the maximum weight that a vehicle can carry . The final part of the assessment is a full inspection of the chassis and caravan that hopefully will not show up any defects that make the upgrade unachievable. It's not really that simple. Manufactured locally on the Sunshine Coast Certification of new, unregistered vehicles, is available at any ARB store or authorised stockist. We also take cash and can facilitate bank transfer with prior arrangement. Towed with Prado's etc. We work closely with vehicle engineers to make sure your MRB5405. Self inflicted by people, and to people. and Safer lifestyle. Deon is a TMR (Queensland Transport and Main Roads) approved engineer, authorised to conduct rerating of ATMs, certify modifications to light and heavy trailers (under or over 4.5T ATM) and approve modifications to local and imported vehicles and trailers in accordance with Queensland Code of Practice. The GVM is the maximum a vehicle can weigh when fully loaded. You say 55+ but you dish out advice as if you are 90 & experienced everything on offer. Get it right the first time, get a FELK, We are a specialist that has been around for a long time, We source high quality, certified parts to withstand the load capacity, We provide a good warranty on our modifications. Limitless Chassis Already registered vehicles fall under the jurisdiction of their state authorities. We had Sixwheeler in Toowoomba modify ours to a master piece. We thats what they say. The compliance plate marks the legal recognition of your cars increased load limit so that you can drive around with a higher load in your vehicle without any police issues. Keep in mind if you exceed your GVM and are involved in an accident whether you are at fault or not, your insurer will not cover the damage for either party be it CTP, Third Party or Comprehensive Insurance. JUST SUSPENSIONhold Compliance Plate Approvals as a Second Stage Manufacturer of GVM Upgrades for Toyota, Nissan, Isuzu, Ford and Mazda: Weve rounded up 10 of the best towing vehicles as following for more details, please click to find reviews of models from Holden, Toyota and more. If the trailer is compatible, we will provide you with a quote for the modification. The usable payload of many 4x4 vehicles today is minimal. Especially when it gets hot . So many things you see and want but how are the guys on TV getting away with selling all this gear without even having their own cars being legal on our roads? EVER. A GVM upgrade is a term for a whole bunch of accessories. Dave Lewis recently referred a customer with an overweight caravan to an engineer for a potential ATM upgrade, only to discover that the caravan chassis had multiple hairline cracks and it needed some urgent repair work. So TBM + GTM = ATM. Dubai +971 543 551 950. I do believe that forums are our best supply of information & advice. MFG's. It was always my intention to upgrade the suspension (mainly for performance, clearance, lift for 44 and a little bit for the GVM). Requirements to load vehicle and operate safely with weight beyond current Original Equipment limits for heavy and/or remote work. Complete heavy towing guide: GVM, GCM, payload, towball limits explained Auto Expert by John Cadogan - save thousands on your next new car! While the change doesnt affect vehicles produced by Second Stage Manufacturers (i.e. The circle is turning. The ones that get their heads round the balance. Unfortunately. Why is it acceptable for a caravan manufacture & the retailer to sell a product that for a lot of consumers is unable to fulfill our expectations. Just putting in luggage along with fuel plus 3-4 adults can make you cross your standard GVM. 8.8 km Directions. They are: 1. EG::: CURRENT ATM IS 2400 KG UPGRADING TO 2800 KG. Our qualified mechanics are experts and will make sure the car is safe and in the right condition to proceed with an upgrade. Upgrading a vehicles GVM before first registration is much easier, as the vehicle is in its original manufacturers state including tyres with no vehicle alteration. Toyota Prado 150 owners have had the limitation of 2500 kgs towing capacity and 250 kgs ball weight. If its in the caravan then it should be able to be used. CARAVAN GVM UPGRADES Is your caravan underrated? These rules are imposed to ensure your safety and that of other road users. We are based in Albany Creek, about 30minutes north of the Brisbane CBD. Have a look atthis news report. GVM Upgrades Upgrade your 4WD with one of our GVM kits today! BAM Garage 1/220 Beverley Street Morningside Brisbane QLD 4170 Australia. To get started with lifting your rig and improving ride quality and handling, give your local store a call today to know about the prices of different suspensions and more. GVM is your cars gross vehicle mass, which decides the maximum load your car is allowed to carry while on the road. New vehicle GVM upgrades are only granted by the Federal Department of Infrastructure and Transport after detailed tests have been carried out by Old Man Emu Suspension Engineers. Lovells Automotive Systems Pty Ltd is in its 90th year of business as a manufacturer and supplier of premium quality springs and suspension components to suit a broad range of applications for the automotive, camper trailer, towing components, agriculture, mining and railway industries.. Lovells has cemented their reputation as a world leader . CRG Diesel tuning 2/119 Olympic Cct, Southport Gold Coast QLD 4215 Australia. So now assume you add 4 people and luggage to the car weighing 362kg. Brisbane, Australia. SUSPENSION . To assist in providing greater flexibility in managing load variations as you need, ARB offers a range of Old Man Emu front axle capacity upgrades for the most popular 44 models when installing an Old Man Emu suspension package. SO be it. The changes to the Vehicle Safety Compliance Certification Scheme (VSCCS) limit such increases to the vehicle's axle mass rating. The Full Airbag Suspension Kit comes with all fittings, hardware and associated pieces that you will need for the installation. Those seeking a GVM upgrade for their 44 in NSW will no doubt be surprised to learn that NSW changed GVM upgrade rules, literally overnight. In most cases we can give you a confident indication of the maximum ATM possible on your van within a couple of days, so contact ustoday to arrange an assessment. Most engineers will firstly supply an assessment sheet that provides the formwork to ascertain whether an upgrade is possible with the caravan in its existing state without the need for structural modifications. Designed for drivers who tow or carry loads, the AME Auto GVM+ upgrade program has been engineered, tested and certified as an official upgrade for load carrying applications. However, the good news is you can always increase it to meet your changing demands, and AME Automotive provides the ultimate GVM upgrade service that will transform your car into the load carrying monster you need it to be. Over the last ten years, however, we have diversified our specialisation towards RAM and Silverado's. Integrity and accountability are at the core of everything we do and we believe in good old fashioned . Crossmember size 11. Again, wrong as we are a family that love our fishing, we wanted to take our tinny with us. ATM upgrades are a particular popular item these days, with more people seeking to spend more time off the grid in remote areas, with the industry-standard 400kg payload no longer enough for a caravan with twin fresh water and a separate grey water tanks carrying a tinnie, its outboard motor and/or a trail bike, a portable generator and perhaps a second cabinet-style fridge full of fish! Steps to increasing your Caravan's ATM. The final weight over the front axle of your vehicle is often determined by the weight over the rear axle, as more rear axle weight will reduce the downward pressure over the front axle. The engineer may also suggest that the Towball Mass (TBM) be maintained at a certain weight in order for the caravan to be towed safely with the increased payload. For instance, if your rig is under its GCM, but the caravan is over its ATM, then the option is there to look into an ATM upgrade. Now that is a lot, and you think why do you need more? Thats why we ordered our caravan with 3 water tanks. Dr Tim's Auto Engineering supply Automotive Engineering Services to vehicle modifiers. Win a Uniden X-Trak 80 Pro Ultimate Pack worth $999.95! (Gross Combination Mass.)