Hi Chris I think the warranty comes down to the vehicle manufacturers maximum axle weight specs and there stock rims on in the end
With my Toyota Ute I got it done before it was registered so it was nationally legal
The ARB upgrade was the only one that set there limit to the published vehicles maximum weight the others where above it
The GVM now is 3780 kg’s and if I am fully loaded I can only tow 3020 kg’s
When I took delivery of it I fuelled both tanks up and put it over the scales with nothing in it
It came back at 2580 kg’s so that gave me 1200 kg’s to play with which is not much when my welder ways around 550 with out leads and one tool box is around 250 loaded and then there is everything else to put in it including passengers but if I had not done it I would have been only able to put 720 on and in it so legally I would have been stuffed but also the genuine Toyota springs don’t last long so eventually I would have had to replace them with something more substantial
The biggest thing with it is if you don’t have it loaded up it can be like a cut snake on the road as everything is beefed up and I am also pretty sure it came back around $5000 installed but it probably was a substantially bigger upgrade weight wise then yours
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