Hi guys looking for some advice as to how big I can go with offroad wheels and tyres? I have a two inch lift and currently run some 255/60/18 general grabber a/t on l322 alloys, just found that it has bottomed out a couple of times when green laning so want a bit more hight so any suggestions?

This is my p38 4.6 she has 2"inch lift and has been converted to coils and wintch bumper