Currently have Mickey Thompson Baja claws on stock FX4 17's....going to something quieter and less aggressive...probably ATZ's......on 18's
325/60/18 is the closest i've found in an 18" to the same size i have now...but they're a little wider....My question:
what is the offset and backspacing of my stock wheels, and do you think i'll need to change that going to the slightly wider tire?

Wandell? Others?

Thanks,

 

Your OEM wheels are 17x7.5 with 4.5 inches of backspacing. I'd go with a 9 to 10 inch wide wheel with 4.5 or 5 inches of backspacing. You will have to trim a little plastic off your front bumper's lower valance. The wider the wheel and less backspacing, the more you will have to trim.

 

Big thanks....i'm looking at the new Mamba M2 wheels from Tirerack...

i called them about the offset etc. and he said its 10mm, and the wheels are 18x9, so my math says the backspacing will be 4.9" does that sound right?