Know Before You Tow...
Are You About To Make A $40,000 Mistake? How Thousands Of Kiwi And Aussie Caravanners Are Unknowingly Breaking The Law And What You Can Do About It In The Next 10 Minutes YES I Want The Towing Calculator →Dear Fellow Caravanner,I want to tell you something that most caravan dealers will never tell you.And the reason they won't tell you is simple if they did, you might walk out of their showroom and never come back.Here it is:Your car might not be able to legally tow the caravan you're about to buy.Not because your car isn't powerful enough.Not because it doesn't have a towbar.But because of a set of weight rules that almost nobody talks about and almost nobody understands until it's too late.Let Me Tell You About A Very Expensive LessonPicture this.A couple excited, finally ready to hit the open road walks into a dealership. They've done their research. They know what they want. They pick out a beautiful caravan. The salesman checks the brochure tow rating on their SUV, nods confidently, and says: "Yep, she'll tow that no problem."They sign the paperwork. They hitch up the van. They drive away smiling.And then six months later they get pulled over at a roadside weighing station.The officer points out that their fully loaded vehicle, with two passengers, a bullbar, a canopy, and the weight of the caravan pushing down on the tow ball...has pushed them 380 kg over the vehicle's legal weight limit.Unroadworthy notice. Possible fine. Insurance potentially void.That smile? Gone.The worst part? It was completely avoidable. They just didn't know what they didn't know.The Dirty Little Secret About Towing RatingsHere's something the brochures don't tell you.Your car's tow rating that big number in the manual assumes your vehicle is basically empty.No bullbar. No roof rack. No canopy. No passengers. No luggage. No fuel.The moment you add real life to the equation, that number shrinks. Fast. A bullbar? There goes 80 kg. A canopy? Another 100 kg. Two passengers? Add 160 kg. A full tank of fuel? Tack on another 70 kg. That's 410 kg gone before you've thrown a single sleeping bag into the back of the car.And here's the bit that catches most people off guard. That weight doesn't just count against your car. It directly reduces how much caravan you can legally tow.Now add the seven separate weight limits you have to stay within GVM, GCM, ATM, GTM, tow ball mass, towbar MTM, and axle ratings and you start to see why even experienced caravanners get this wrong.It's not stupidity. It's complex. Nobody ever sat them down and explained it clearly.Until now.Introducing The Caravan Towing Weight Calculator For NZ & AustraliaI'm a long-standing member of the New Zealand Motorhome Caravan Association. And I built this tool because I was sick of watching good people make expensive, stressful, and totally avoidable mistakes.This is a carefully researched, easy-to-use Excel calculator that tells you in plain English exactly what your car can legally tow, whether you're in New Zealand or anywhere in Australia.You don't need to be an engineer. You don't need a degree. You just type your numbers into the yellow boxes...and it does the rest. Here's Exactly What You Get The Calculator Sheet Type in your vehicle specs and your caravan weights. Instantly get 12 live compliance checks. Each one shows PASS or FAIL in green or red. No guessing. No maths. No stress. The Definitions Sheet 18 key towing terms explained in plain, simple English. What is GVM? What's the difference between ATM and GTM? What is tow ball mass and why does it matter? It's all here, written so a ten-year-old could understand it. The NZ Rules Sheet Every NZTA regulation you need to know. Weight limits, braking requirements, speed limits, licence classes, safety chains. All in one place. The Australia Rules Sheet A state-by-state comparison table covering all 8 states and territories. NSW, QLD, VIC, WA, SA, TAS, NT, and ACT. Because the rules aren't always the same. The Quick Reference Checklist A printable checklist for before you buy AND before every trip. Stick it on the fridge. Take it to the dealership. Use it every time. BONUS: The Towing Diagram A full-colour labelled diagram showing a tow vehicle and caravan with every key weight definition marked on it. Worth its weight in gold for anyone who's ever stared blankly at the words "Gross Combined Mass." This Isn't Just For New CaravannersSure if you're buying your first caravan, this tool could save you from a very costly mistake before you even sign the paperwork.But if you've been caravanning for years?You might be surprised by what you find.Most experienced caravanners have never actually sat down and checked all seven weight limits for their specific setup. They've always assumed they're legal because the van moves and nothing has gone wrong yet.That assumption is fine right up until it isn't.One roadside weighing station. One insurance claim that gets rejected. One moment where something goes wrong and the investigation reveals your combination was over its limits.This tool takes 10 minutes. And it could save you thousands. What Other Caravanners Are Saying "I've been towing for 12 years and I still learned things from this. The compliance checker alone is worth the price."* "Bought this before picking up our first van. Turns out our car was already right at its GVM limit with our accessories. We would never have known."* "Finally someone has put all this information in one place. Clear, simple, and actually useful."* Here's My Promise To YouThis tool was built by a real caravanner, for real caravanners. Not by a corporation. Not by a lawyer. Not by someone trying to sell you something else.If you open this file and it doesn't work for you, message me directly. I'll help you personally.And if the rules change, I'll update the file. You'll get the update free.So How Much Does Peace Of Mind Cost?Think about what you're about to spend on a caravan. Tens of thousands of dollars. And the tow vehicle to pull it. More tens of thousands.Against that, this calculator costs less than a tank of diesel.Just $47.95 NZD.One payment. Instant download. Yours to keep and use forever.Here's What To Do Right NowClick the button below. Pay once. Download instantly.In less than 10 minutes, you'll know exactly where your setup stands legally and safely.Because the open road is a whole lot more enjoyable when you know you're on the right side of the rules. YES I Want The Towing Calculator → Warmly,RobbieNZMCA Member | Creator, Caravan Towing Weight CalculatorP.S. Remember: your dealer checks the headline tow rating. This tool checks all seven weight limits. There's a big difference. Don't find out which one matters the hard way.P.P.S. The calculator covers both New Zealand AND all eight Australian states and territories. One tool. Two countries. Every rule you need.⚠ Disclaimer: This calculator is an educational tool based on official government sources. It is not legal advice. Always verify your setup with your vehicle manufacturer and relevant transport authority (NZTA or your state transport department). Last updated June 2026.
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