Join Date: Nov 2008
Location: Flushing, Michigan
Its kind of hard to help you because you want to take up more space in the wheel well but you don't want the Jeep to be any higher. If you go with a 20" wheel and get a 29.5 inch diameter tire, it will still have the same space around the tire.
I'm not very familiar with 20's but I would think you could use that calculator I sent you and fill in some numbers and try to get the diameter to be close to 29.5 inches.
Did you want to go wider that 245? How wide? 265? 285...
If you want to keep the same height, the most economical way is to just get new tires on your existing rims, and stay with the stock size of 245/65/17. Then get a good all-terrain tread.
2007 XK Limited, 5.7L Hemi, QDII, Rusty's 2" lift, Spidertrax 1.5 inch wheel spacers, GetLost4x4's front hitch mount for portable winch.GY Duratracs 265/70R17s , Rola Roof Rack, diy built spare tire mount for the roof rack.