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I'm wanting to upgrade my wheel and tire's on my 2022 Silverado Z71 Duramax. I've given it some thought and I don't want to go much beyond what's been factory options (33's). My stock tire's are the 275/60R20's. I've settled on these two tire sizes for the time being and would like some input from the community. The 305/65R18 does seem to be flirting with control arm clearance as I've read that my stock setup may even come into conflict with certain aftermarket UCA's (Camburg billet). I've attached some screen shots of an offset calculator that I've been using for comparisons. The aftermarket wheels I'm looking at for this setup do have less positive offset and there for the tire is less than a 1/4" closer to the UCA. I've measured my stock setup and it seems as though this would work as I currently seem to have at least a 1/2" to 3/4". Maybe my bigger concern is the added 1" added outside? I would like to retain the factory mudflaps and wheel well liner. Any experience with running this setup or information about clearance's would be helpful. I've also thought about running a 17" wheel as I really like the look of tall sidewalls. My other thought is to run a 285/75R17 on a 17" rim with a 0 offset. This would definitely help with any potential control arm issue's but it would cause the tire to stick out about 1 1/4" from stock sizing. Would this cause any clearance issue's? This may be my preferred combo, due to the taller sidewall and plenty of control arm clearance. Any input is appreciated. I do plan on leveling the truck. My current thought is 5100's or Fox2.0 IFP. Do I need to know anything about these working on a Duramax? Thanks for your time. PS...I've attached a screen shot of the two tire sizes in question as compared to one another. I would also be able to run the tires I’m wanting with a “C” load rating at 305/65 vs an “E” rating on the 285’s. Would this be helpful with dampening the harsher ride from the 5100’s?

I have a stock 2017 GMC Sierra 1500 slt preferred package. Time to get new tires and the Mickey Thompson Baja boss at’s look promising. Can anybody tell me if the 275/60 will fit without a level and and real world reviews on these tires (particularly road noise)? It shows that they measure at a 33.4 which is a little bigger than other 275/60s. Pics also appreciated

I'm looking too lift my 2016 4x4 3.5 inches. Will a 33x12.5r18 fit without rub? May trim liner back but no metal as the truck is brand new. If not what is the largest alternative size?

Looking to replace my Goodyear Wrangler 265/65R18 tires with something that is more load rated - in the E range. Like the BFGoodrich All Terrain T/A KO2 Tire but would like to know if a larger size would work on my 18 inch rims. If I do not lift, is there a max suggestion? Or if I lift 2 inches - is there a better suggestion? Looking for ideas that will not rub or limit turn radius...... Thanks in advance for all your comments.

For those curious about tire sizes... I ended up putting 275/60/20 Cooper ATs on my 2015 Sierra 1500. I currently do not have a leveling kit and do not have any rubbing issues. I was going to go with a 2" RC leveling kit and 275/65/20s, but saw some pictures where they were rubbing. I didn't want to risk having to shave back wheel wells for an extra inch of height. I may still put on a 2" leveling kit, but it is NOT necessary for the 60s. The pic is on a slant in a field. Will take a better picture on flat ground!