Originally Posted by frogman46
Thanks 4fit. I have been researching tires and wheels for about a week now and am leaning toward the Duratracs. I have had the BFG AT before on a 4x4 truck and they did well but the sidewall is not to aggressive looking for a Jeep IMO. I have a stock 09 Wrangler Unlimited X 4x4 and was told that I need to stay with a 0 or positive Offset on wheels. I was also told that I could run 265/70/16 or possibly 285/70/16. Not sure about either. Any suggestions?
You could run either of those tires. Could even run a 285/75/16, which is essentially a 33x11 tire. Of course, this is depending on the backspacing of the wheels you decide to go with (4.5" and under is desired for the JKs). You don't need to stay with a 0 or positive offset either. Actually, the offset isn't going to matter much, unless that is the only number you are given. You can use offset to calculate the backspacing, which is the imperative part to fitting the wheel on the JK.
There is a formula for calculating backspace from offset, but its just as easy to use an online calculator like this
For instance, lets look at the MB Gunner 5 wheel. In the 16x8 wheel size and the correct JK bolt pattern of 5x5 (5-127), the Gunner 5 is offered with 2 different offset; 25 offset
and -6 offset
. If you were to go with the 25 offset version, that would yield a backspace of 5.5". Way too much for the JK to be able to clear a tire of moderate width. However, if you went with the -6 offset version, you would have a backspace of 4.3", which would work perfectly.
And, just for a visual reference, you can see pics of Sunny's new JKU with 16x8.5 Level 8 Trackers and 285/75/16 Duratracs in this thread
. And I'm pretty sure basecamper is running the same tires, but on 16x8.5 Level 8 Strike 5s. You can see his setup here