I have been running 2" hub-centric spacers on my 2025 Silverado LT Trail Boss and my tires rub like a MF! My setup is as follows:
4" Zone Off-road suspension lift (6" total lift)
FOX 2.5 DSC Front Coil-over shocks
FOX 2.5 DSC Rear shocks
305/70R 18 tires on 0 offset 18" Rough Country wheels
Even after major trimming (cutting and bending), my tires rub the outer part of the wheel well liner (on the side of the firewall versus the bumper side).
I will be doing a drastic change of going to a 15mm wheel spacer and hopefully this will alleviate the unfortunate rubbing. I did attempt going without any spacers, but the inside of my front wheels/rims rub the calipers because of the 0 offset, so I will be going to these much thinner spacers to hopefully rid both the rubbing on the fender liner and the calipers.