If i replace my stockers with a 18x9 what offset and backspacing should i look for?I will be running a 2.5 inch AS and rear block with Kumho RD ventures mt 35x12.5/18

 

TO fit a 35x12.50 with just a leveling kit, you are gonna need an 18x8 inch wheel with 5.5 inches of bs or stick with the oem wheels. Personally, I'd go with a 33x12.50 tire or a 325/60-18 tire (33x13.00) on an 18x9 inch wheel with 5 to 6 inches of backspacing.

 

how about a 20x10 with 33s? or is the 10 to wide?but i have narrowed down to 20s with 33s or whatever is = to that in a mud tire

 

I personally would not go to a 20" rim with 33s or 35s. I think the 18" rim looks much better, unless your tires are 37" or bigger.

The 18x9 with 5" of backspacing is what Wandell recommends for a leveled truck with 33" tires.

FX4-Texas

 

As long as the 10 inch wide wheel has about 6 inches of bs, it should look fine. If it has less bs than that, it will probably stick too far out of the wheelwell and look odd.