Originally Posted by BossierCity_WranglerJK
What if I went with aluminum procomp black wheels and like a 33 will I need to regear
You never "need" to regear.
It's just the bigger the tire gets, the further your RPM drops at a given speed, bringing the engine farther from its optimal power curve and giving you the feeling of more "lugging." In other words, the jeep becomes more and more of a "dog" the bigger the tire gets. Having the tire/wheel be particularly heavy will exacerbate this. "Regearing" the differentials brings the RPMs back up to (or above) stock levels.
33s on a lightweight aluminum wheel won't be as bad as 35s on a heavy steel wheel.
Again, there are guys with auto transmissions that run 35s without regearing. I just think it would take away a lot of the fun of driving. But it is done.