UrsineAPL

Mine are stamped steel.

Yup, it's a 2016 GMC Sierra DBL Cab Standard box 4x4(non-Z71). Whole truck is stock other than the tires at this point. I did a lot of research on this forum and searched everything I could find. And most people said they didn't rub, there were some cases of people saying they'd rub at full lock and such. So I bit the bullet and took a chance and I haven't had any rubbing issues, I pull out of my parking stall at full lock almost everyday and haven't rubbed once and I drive through service roads and construction sites often. During my first 5000KMs I checked my fender liners constantly and never saw any rub marks, or felt anything. At this point if it were to rub it would have to be a weird one off maneuver for me. Like reversing at full lock over a bump.

I'm in the process of looking for a leveling kit at the moment, but had to get new tires due to a sidewall puncture in my stock tires. I have the same stock rims as you and went with Falken Wildpeaks in 275/60/20. I've had no rubbing issues at all on stock height. And I haven't notices a difference in ride quality.