Originally Posted by DALTONSJK
did it make gas mileage worse..
I would guess that gas mileage with 4.88 gears would improve for in town driving, but the mileage would be the same or worse on the highway because of the higher rpms at highway speeds.
I had 4.10 gears, but I decided to get beefier axles with 4.56 gears. I'll pick up my JK with the new axles and gears this afternoon, so I'll find out how the new gears work shortly. The 4.10 gears were ok with 35" tires, but not optimal with the added weight from bumpers, sports cage, skids, sliders, winch, beadlocks, ect.