Yeah.....all four tyres are the same.......they are "Ghost Sliders"....its being locally made here in South Africa by a dude, and they are brilliant. Ill get you the info on them if you want it.

T get back to the diff.......Cant unlock it as its a fully locked differential, but i can swap it with the front one as they are the same size.......but i think ill swap them and see what it does....