gear ratio

I went to register my vehicle and I was informed that I needed an emission recall slip from the dealership. Didn't seem to be a huge deal, so I went to the dealership to inquire further. They told me that the recall is related to the Powertrain Control Module (PCM) and they'd need the vehicle...

I live in Utah and rock crawl and trail ride frequently. This is not my daily driver but I do drive it to the trails on highways. Was just in MOAB. I currently have 33s but am not sure what to go with as far as gear ratios when I upgrade to 37s. Any recommendations?

Well, It has been about 6 months since I took delivery of a '22 JLUR with the 4.88 gear set direct from the factory with the manual transmission. I figured I would write up what I think so far and some of the interesting bits I have noticed. First, the particulars: I am a new Jeep owner. My...

Here's a spreadsheet I built to calculate gear ratio, tire size, speed, etc. The yellow colored cells are how to control the inputs (either drop-down or number fillable), all other cells are un-editable. Update: Added a new tab to easily compare differential ratios in top gear. Also some...

From an internal document: Axle ratios available for each model: 2-door JL Wrangler Sport (2.0L): 3.45 2-door JL Wrangler Sahara (2.0L): 3.45 2-door JL Wrangler Rubicon (2.0L): 3.73, 4.10 2-door JL Wrangler Sport (3.6L): 3.45 2-door JL Wrangler Sahara (3.6L): 3.45 2-door JL Wrangler...