well i guess its kinda the same everywhere (in the world, maybe except US) the rule is, tyres gotta be covered by flares or body.
and i heard once that wheels and tyres cannot differ from factory specs by more (or less) than one inch in width and or height. or else it needs to be certified or engineered.
31" - 33" seem to be max for Vits here, but i have seen and know a lot of vits that just stick with the 235/75R15, (thats what i started with). with the smaller tyres and wheels, there's less stress, less likely to break something, and the vits fly with the smaller wheels and tyres.