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What gear ratio do I need?
Doesn't take long to realize those new 35" tires make the Jeep a dog on stock gearing, and we don't even need to mention gas mileage. Going from a stock 27" tire to a 35" tire is roughly a 30% increase, if your Jeep came with a 3.07 ratio from the factory, you will now need a 4.10 ratio to keep close to factory gear ratio. Choosing the proper gear ratio though depends on many things, like how much highway driving do you do, how much time will this spend off road, what kind of off-roading do you do? Below are general rules of thumb:
 
6-Cylinder4-Cylinder
TiresManualAutoManualAuto
31"4.103.734.564.11
32"4.103.734.884.56
33"4.564.105.134.88
35"4.884.565.385.13
37"5.134.885.895.38

 
Related Topics: | What gears do I have? | Why do I need to regear? | What do I need to regear? | Can I install new gears? | Carrier Breaks: |
 
Related Writeups: | Differential / Gear Setup Basics | Axle Identification |
 
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