This is a 3/5 drop from IHC Suspension running the factory original rims with 275/55/20’s. (They are 31.9” tall, 10.8” wide)The front rubs very slightly with passengers and the wheel turned all the way to the left only. A rubbing issue is also going to depend somewhat on the brand kit you use. If you change lower control arms, you’ll lose some turning radius with certain brands. With a bone stock GMC Sierra 1500, you should have 1-1/2 turns of the steering wheel.