by AusTac » 01 Dec 2017, 4:33 pm
It depends on the specific vehicle and what your looking to upgrade it to, but for example i'll use a yota land cruiser 79 series which have a gross vehicle mass of 3300kg, by the time you chuck on bullbars and winches a toolbox and 4 blokes your close to if not over that weight , as i'm sure your aware, toyota engineer the vehicle to carry this weight safetly using X parts which are manufactured to withstand x amount of force tensile strength in the bolts etc, throw a few 100 kgs on the tray over that and yeah you might get away with it you might not, it'll probably be fine for farmer fred, but get caught and your up s**t creek, somewhere some engineer has come up with a kit which has been tested to withstand x amount more load, which is usually about 600kgs more than stock, the engineer does all the R&D testing etc, knows what forces the the stock brakes and steering can take but then find's the stock leaf's and front shocks springs arn't up to the task, they may be at coil bind or whatever the case, all that suspension stuff ( usually shocks, bushes, alignment at a minimum is important but one of the most important parts to get right over just a lift is the load proportioning valve drop bracket, more weight means more brake bias, which adjusts as you stack the weight and how abs if fitted responds etc at the end of the day, someones done alot of work, they're putting their name/signature on the dotted line saying this is safe/engineered/legal which is why the mines/gov spend on this kind of work
Not an engineer or expert by any means eaither
Certified part time hillbilly