i am looking at the procomp mud terrain tires and all i can find for a 17 inch wheel is 33/12.50. i cant find the 305/70/17 or 315/70/17. will these fit on stock rims or should i get new rims? and will these fit without adjusting the torsion bar? or should i get a lift. i dont have a problem doing that but i kind of wanting to star away from it.

 

It's just two different ways to measure tires. Pro Comp just uses floatation sizes for their 17's. To answer you question, 33x12.50-17's will fit your 4x4 by using the stock wheels. I doubt you will have to crank up your torsion bars if your stock 17x7.5 inch wheels. Also, the tires you mentioned work out to be larger than 33x12.50's. A 305/70-17 is approximately a 34x12.50 and a 315/70-17 works out to be a 35x12.50-17.