Wheel spin can occur due to lack of traction, so you have to specify: is the problem due to this lack of traction, or because you're not geared low enough and you have to get on it to keep momentum?

The first one is a tire/locker/driving style issue, second is gears.


4x4Wire's Toyota Section
1995 FZJ80 LandCruiser - 3 locking diffs, +200k mi, JD HIR's, 285/75R16 Nitto TG's
Olde North State Cruisers