What size tires will fit my Silverado

[Wolfe828]

I own a 2015 Silverado 1500 wt and it has a leveling kit on it (2.5 in front 1.5 in on the back). I was wondering how big of tires I can fit on my 17 in. rims without rubbing bumpers or any of that. Thanks in advance 

[C Turner]

I also just bought a 2015 Denali with stock (20in rims for the Denali) and have been looking all morning for the thread that HAS TO exist, but I cannot find. Planning on putting the RC 2" leveling kit (https://www.roughcountry.com/gmc-leveling-lift-kit-1311.html?find=2015-gmc-sierra-1500-4wd-374093)  on her and would llike to upsize the tires a little if possible. Anyone have a link to the appropriate thread, or an answer?