Originally Posted by mattyswinks
Hey, I dont know if this was already asked but I have a 2010 two door jeep wrangler sahara and I was looking to put on a new set of mat black wheels and tires. I wanted to know what is this biggest tire I can get with a smaller wheel without having to get a lift. If you can help me out that would be great!
Generally speaking, 15" rims will save you $$ and weight. Your tires (in whatever size) will also be cheaper.
You can run 33" tires on an unlifted JK w/no problems. Although, if you off-road much, you'll probably rub in high-flex situations.
The backspacing of your rims is critical, as well. You'll want wheels with around 4.5" backspacing or less if you're gonna run wider tires (11" +).
This thread should answer all your questions: Largest tire on stock JK? Here's your answer!