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Old 08-25-2014, 03:47 PM
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Gear ratio/Tow Pkg vs. tire size?

Hey Everyone, new member. Sorry if this is a repeat thread, I haven't been able to find a clear answer on this. If there's a link from a past thread that would be great. Thanks in advance for the help. I'm going to buy a Jeep Wrangler unlimited this week and want to be able to put larger tires on it. Nothing crazy, probably not even a lift but as big as I can get using the "hockey puck" method. Does a Sport need to have the tow pkg and higher gear ratio in order to put larger tires on it? Can anyone explain how gear ratio affects tire size, gas mileage, speed, any info would be very helpful. I'm just scared I'm gonna purchase the wrong thing and the salesmen I've dealt with are absolutely clueless. I'm sure gearing can be changed later but I'd rather just get the right setup out the door. Thanks again. Eric
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Old 08-30-2014, 03:55 PM
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Re: Gear ratio/Tow Pkg vs. tire size?

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Originally Posted by zerolimit View Post
Hey Everyone, new member. Sorry if this is a repeat thread, I haven't been able to find a clear answer on this. If there's a link from a past thread that would be great. Thanks in advance for the help. I'm going to buy a Jeep Wrangler unlimited this week and want to be able to put larger tires on it. Nothing crazy, probably not even a lift but as big as I can get using the "hockey puck" method. Does a Sport need to have the tow pkg and higher gear ratio in order to put larger tires on it? Can anyone explain how gear ratio affects tire size, gas mileage, speed, any info would be very helpful. I'm just scared I'm gonna purchase the wrong thing and the salesmen I've dealt with are absolutely clueless. I'm sure gearing can be changed later but I'd rather just get the right setup out the door. Thanks again. Eric
How big are you looking for the tires and is your Jeep and Automatic or a manual. You can always upgrade them later.

On the sport the max you can go is 3.73 gear ratio. Some people say that is enough for 35" tires and some people insists that for a 35" you need 4.56 ration (which isn't even offered by Jeep)

A higher gear ration will give you a lower top speed (which doesn't matter) however the Jeep will accelerate and respond faster (which matters).
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