On the American Racing website I have two options of offset for the wheel i want. My main concern is that i dont want the tire to rub. I dont mind if the wheel sticks out 1 inch from the fender but not much more then that. I've decided to go with the BFG mud KM2 305/55R20 (which correct me if i'm wrong but its alittle bigger then a 33x12.5). The wheel I'm going to get is 20x8.5.

The two options they give for that wheel is offset 6mm and backside 5. Or offset 15mm and backside 5 3/8.

I just want to make sure I get it right before i fork out the cash. thanks for your all your guy's help.

 

I'd like to get a look like PimpRohr's truck as far as the wheels. If the wheels stick out a hair more then what his are thats cool. but not too much. I want a clean tough look.

 

An 8.5 inch wide wheel with 5 inches of backspacing will stick out 1/5 inches farther than the OEM 17 and 18 inch wheels. An 8.5 inch wide wheel with 5 3/8 inches of backspacing will stick out about an inch farther than the OEM 17 and 18 inch wheels.