I just bought an 08 lmm, not my first Duramax, but after the past few years dealing with Ford definitely will stick with Duramax's from here on out. Everything on the lmm is absolutely stock now and I'm already making a to-do list. My first question is the infamous Tire and Wheel discussion.... I will only be doing a leveling kit with UCA's as far as lifting. I'm wanting to use 295/65r20 or 285/55r22 tires(I already know major trimming will be required). The big question is to run either of these size tires what width/backspacing/offset will i need for my wheels? The wheels I am looking at are the factory denali 20's with adapters or rock stars...I really like the 5 star look on these trucks.