sumner135

I still have everything factory in my wheel wells. No rubbing with zero lift and the 275/60/20s. Sent from my iPhone using Tapatalk Pro

Springfield XDS .45 is my normal CC.

I just installed 275/60/20s on my stock '15 Sierra without any issues, and a friend with 265/70/18s on stock... If you go with the 285s you will probably not have to have a 2" lift, but you will need some trimming done for sure.

I would guess you will be fine with your set up. The only area of concern would be if you get a flat. If it's in the back, you'll have to rotate a front tire to the back and put the spare up front for the no slip transmission. Should look awesome though! Sent from my iPhone using Tapatalk Pro

For those curious about tire sizes... I ended up putting 275/60/20 Cooper ATs on my 2015 Sierra 1500. I currently do not have a leveling kit and do not have any rubbing issues. I was going to go with a 2" RC leveling kit and 275/65/20s, but saw some pictures where they were rubbing. I didn't want to risk having to shave back wheel wells for an extra inch of height. I may still put on a 2" leveling kit, but it is NOT necessary for the 60s. The pic is on a slant in a field. Will take a better picture on flat ground!