All 4 tires are he same size, 245-75-16 (stock is 245-70-16 I believe). Front right is a little more worn than the left, but the overall wear is even. As far as driving dry, usually just up and down the alley behind my house, about 100 yards or so. If I have to replace the outer CV joints, then I'll probably make the switch to manual hubs. Going to grease them up good next weekend and put on 2pc boots then drive some steep fire roads a friend can get me on legally. Thanks for the info.

'92 Trooper S, 3.2L SOHC, 5sp, 4X4, bone stock for now.