3.21 running 33's
Probably not critical but you'll likely notice a difference. Depending on what your expectations are and how you use your Jeep will answer the question for you. Personally I think the 4.10's I have are just adequate with the stock 255's.
I'm running 33's with 3.73 and it's about perfect. but let's hear BaltChief or someone with actual experience.
I have an airaid, chip and magna flow exhaust in the stock position. I see no need to regear. I can handle75 no problem in sixth as long as there is not a strong headwind or I am going up hill.even then I dont need to downshift or anything. around town it has more than enough power. I dont plan on regearing in fact i am getting around 17MPG with the setup I have so i will trade the slight performance loss for the fuel economy. hope this helps
I have been running 35x12.5x17 for about 2.5 weeks with 3.21's and it is not nearly as bad as I expected. I lost 6th and can only use 5th on the highway. Can still hit 80 if I push it a little.
Before the 35's I was running the stock Rubicon tires with 3.21's and it was very driveable. I would really put the tires on and try it out for a while. My guess is you won't mind it for everyday driving. You may have more of a need for 4l when off the pavement.
All that being said the day after I put the 35's on i ordered a set of 4.88's and am awaiting delivery (apparently Superior was out of the D30 4.88 and they should ship at the end of the week). All in all I will have about a month on the 3.21's and it is better than I thought.
Before the 35's I was running the stock Rubicon tires with 3.21's and it was very driveable. I would really put the tires on and try it out for a while. My guess is you won't mind it for everyday driving. You may have more of a need for 4l when off the pavement.
All that being said the day after I put the 35's on i ordered a set of 4.88's and am awaiting delivery (apparently Superior was out of the D30 4.88 and they should ship at the end of the week). All in all I will have about a month on the 3.21's and it is better than I thought.


