What do you call full offroad tyres?
The bartracks at the top there are old hat and not much use except in very specialised conditions.
Likewise the lower oe - forgot what its called but lethal on side slopes.
Sounds like you want a Simex copy. Try Insa Turbo or Marix for 2.
Still think you're going to run into touble if you get a true 33" tyre - so many 33s actually measure up at a good bit less. If I were buying new think I'd go for a 235/85/16 nears as damn it 32". Should go on without too much work and pretty cheap cos its a landy size.
