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Gear Help Please

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inthemud14:
Im currently running stock 3:55 gears on 33's and it sucks, im going to a 35'' tire in the spring and need some help with what i should gear to.

My dad(mechanic for over 20 years) says i should stay around 4: 10 but every where else says at least a 4:56 or a 4:88.
since i sadly have chrome rims, they will be mounted on my 35's sorta like a anti-winter setup, and stock rims on my 33's. Should i gear to a 4:56?


http://jeeptalk.org/gear_chart.php

Is this chart accurate/

BlacXJeep:
if its a daily driver then 4.10 for 33s. 4.56 for 35s. If its a trail only rig, you would want to look into going a size lower. for example with 33s on a trail only rig 4.56 would be good, with 35s 4.88 or 5.13s etc...

calvynandhobbs:
For 35" tires and having an automatic I would go with 4.10s or 4.56 gears. 4.88 gears are too tall for an automatic since you don't have that 5th gear that the standards have. If you DD yours and use the highway a lot 4.10s will give you the best gas mileage since you'll be able to keep your RPMs a little lower. If you are 50/50 or more towards the wheeling end of things the 4.56 gears will get you better torque, but you'll suffer a little bit with your gas mileage and probably be around the 3k RPM range at 70mph on the highway. I think Nate has 4.10s in his XJ and is planning to go to 35s.

Tsunami:
i am runnin 3:73 on 33's, great for on and off road driving, so far i have been ith the crew on a few runs and have had no serious issues, and the ges milage on road is as to be expected from a jeep

calvynandhobbs:

--- Quote from: Tsunami on January 19, 2010, 10:50:51 PM ---i am runnin 3:73 on 33's, great for on and off road driving, so far i have been ith the crew on a few runs and have had no serious issues, and the ges milage on road is as to be expected from a jeep

--- End quote ---

Adam, I can't remember if you have a 6spd or an automatic, but they are completely different when it comes to highway driving. If you do have the 6spd try driving 70mph in 4th gear and you'll be closer in the RPM range to what he will experience. I believe even with an automatic I would probably go to 4.56 gear though. I would only do 65mph on the highway rather than 75mph to help with gas mileage a little bit.

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