Originally Posted by TBONE21
Well duh.. Lol. A lift looks bad without tires in my opinion. I guess my question is with 35 inch tires, will a jeep perform better with that 3.73 vs the 3.21 or will it not be noticeable?
Obviously the tires will weigh a lot more that stock
You can get down the road with 35's and 3.21's. But you lose the use of overdrive for sure and maybe even more. They're not even very good for the stock 32's. They're only really appropriate for the base model stock 29's
3.73's are almost liveable with 35's. But they are less than optimal. You'll have excessive downshifting out of overdrive if you're running in any kind of hills. I wouldn't consider running 35's with anything below 3.73's. And if I had this combo I would give serious thought to upgrading.
4.10's are at the low end of what really is acceptable for most 35's. They get your RPMs up to where overdrive is really useful on the freeway. Many people with Rubicons run 35's with the factory 4.10's and are happy.
Anything numerically higher requires a swap. But the benefit is that you're putting the engine RPMs into the more optimal range.
4.56's are what most people find truly optimal. They give you the best overall performance in most conditions.
4.88's are also a good choice. RPMs start to get a bit much for optimum fuel economy but you get better performance at higher altitude and your crawling performance is improved.
Beyond that, you're getting into ratios that are better suited to off road than on.