I have an 06 2.4L with 30" tires. I just put on a 2" lift, shocks, and a 1.25" BL I have 15x8 aluminum rims. I can't decide weather or not to go to 32x11.5 or 33x12.5 mud terrains. the difference is about $20 a tire so no big deal. My concern is I'm not going to be able to re-gear for a while, I can deal with downshifting and whatnot on the interstate but I don't want it to dog on the trail. Is there much of a difference between 32 and 33" tires performance wise? I have 3.73 gears at the moment. I realize I will lose power but what do you guys think 32 or 33's? I offroad quite a bit and want the extra flex clearance of 32's but I also want the extra ground clearance of 33's.
Are you sure you have 3.73s? I thought all 4 poppers came stock with 4.10s? I could be wrong though.
I would go with 32s personally. The extra 1/2" of clearance is minimal, but the extra power loss would be significant with 33s. Unless you wheel a lot, then the 33s might be prudent. Also, the 32s will fit better with less rubbing with only a BB and 1.25" BL.
Tag on both diffs says 3.73 I have 6spd manual. The power loss between 32x11.5 and 33x12.5 would be that much? I mean really as long as can have power on the trail I could care less about highway driving. I have been leaning toward the 32's for some time but the 33's are still hanging over my head.
It'll be fine on the trail. I have 33's with 3:07's and it does fine. Every opinion is different, and if you are seriously concerned, see if you can borrow some 33's from a buddy for an hour, drive it around and see what you think.... I have no real need for speed, and so it works ok for me.
The question is: will you be gearing it in the future? If so, go for the 33s. If not, be prepared to smell burning clutch sometimes. I ran a lot of trails when I was on 32s that people with 35s had problems on. A lot depends on experience and driving ability. Then, I ran trails on 35s that people said 37s were a minimum. Then 37s while everyone else was on 39-40s.