'10 JKU Auto gearing question
Ok, I'm getting ready to re-gear my JKU soon and have narrowed it down to 4.88 and 5.13. I'm currently running nearly new 285's so there is no immediate plans to upsize but it's an option I'd like to be able to consider with the next set of shoes. I know of the strength difference's between them and it is not much of a concern of mine. So, how will it be on 285's with 5.13's, At 70mph towing 1800lbs will it still be downshifting constantly and if so will it be over revving in 3rd gear? How about without the towing load?
And if I go with the 4.88's how will it be if I decide to run 35's later on? I'm assuming it'll be slightly under geared again, especially when towing.
How about the fuel milage differences between the two given that the tire sizes are the same for each gear ratio?
Most of my driving is on relatively flat roads with weekend trips to the mountains of NC if it helps.
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