geauxtigers

If you like the stock width, you'd probably be safe to go with 275/60r20s or MAYBE 275/65r20s

Thanks man, I love how it turned out! Now its time to find something else to do to add to it haha

Finally broke down and did it. RC 2.5" level. 295/55r20 Nitto Trail Grapplers. Air dam removed.

Looking to pull the trigger on a leveling kit and tires soon on my '15 sierra CCSB. Im sure this has been answered before, but would y'all recommend the RC 2.5" leveling kit or bilstein/rancho quick lifts? Also, what is the biggest size tire that you can run with each on stock 20's? I'm looking at 33x12.5x20s or 275/65r20s. With a true 33, how bad is the rubbing on the UCA/sway bar?

Awesome, thanks for the information man. I think that I'm gonna break down and order the level/tires in the next week or so. Ill post some pics once everything is installed.

Love the look of your truck and i really want to do the same set up. Did the level and tires affect the ride or gas mileage drastically? Also, do you have any rubbing on the fenders, sway bar, or UCA? I've seen some post saying that 33x12.5x20s will rub the sway bar and UCA at full lock with the same stock wheels. They say you can't feel it but after inspection you can see where it rubs in pictures that theyve posted.

I know this has probably been answered before, but is it possible to run 33"x12.5" tires on a 2" leveling kit with the stock 20" wheels? Anyone have pictures they can post? I don't really want to trim, so any issues with rubbing?