2014 Silverado new tire and wheel sizes

[kjonas812]

I have a 1.5 inch leveling kit and am running 285/65r-18 tires with no problems.

I am going to purchase new rims and larger tires (33" or 34"). What rim offset should I use and how tall of a tire do you think I can get?

[6.2Chevy]

From what I've read on these forums, you can't really go any bigger than what you've already got unless you lift it more than 3". I have a 2015 silverado 2.5 level 275/70/18 and I rub at full lock. 

[FORGIVEN06]

Sorry

[steve76t]

really depends on what your looking to change.  275/65r18's are already considered a 33" tall tire, about 32 1/2, and a touch over 11" wide.  First thing to look at is how much clearance do you have now?  Check that out to see how close the tires get to the rear portion of your wheel wells, the corner of your bumper & lower valance, how much room at the a-arms at full lock in both directions, etc.  Once you know how much room you have to work with you'll have an idea what changes you can make.