Originally Posted by
isuzurover
This is a ridiculous suggestion (sorry).
For starters - some vehicles came standard with big tyres:
Unimogs (up to 40-50")
Volvo C303s
Land Rover: one-ton / 101FC / etc. (9.00x16 is actually 35-36"). The Forest/Roadless rover had up to 52" tyres!!!
And quite a few more. Now these aren't especially common, but how does this blanket ban on tyres over 33" work for these vehicles?
Secondly, many of the (more common) 4x4s that run 35's are doing so ILLEGALLY - so how do we make something that is already illegal illegal? e.g. in QLD, larger tyres CANNOT be approved at all, under any circumstances. The largest you are allowed to go is +25mm on a solid axled 4x4 (so that makes 33"s legal for 110s, but not discos and rangies).
Thirdly, the NCOP, which will hopefully be implemented - is like the QLD system. It will limit tyre diameter increases to 50mm over standard. So 35s would be legal on 110s, but no larger.
As others have said, it isn't tyre size that is the main issue - but how do we stop all the idiots who think it is fun to go out 4x4ing in wet weather and rip up the tracks with lots of right boot (especially when they get stuck), and 50 attempts at each section they can't get up???