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Old 09-09-2010, 10:12 PM   #1
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Question tire size

Right now I have 31/10.5/15 kumho tires. They look great but I do not off road and my 4 cylinder motor cannot turn them over on the highway. I was looking at 235/75/15 but will I be happy with those or do I need to go even smaller?

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Old 09-09-2010, 10:16 PM   #2
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That 235 tire is about 2 inches less in diameter and over an inch narrower. I wouldn't want to go any smaller personally, but it's your Jeep!

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Old 09-10-2010, 06:29 AM   #3
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why not regear? wouldnt that be a better option?
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Old 09-10-2010, 09:59 AM   #4
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Yea, 235 is actually a nice looking tire, especially in someone with some nub on it like the BFG's. It's not the stocker 215, but you still be happy with them.

Yes, regearing is your best fix so you can keep those 31s. If it was me I'd keep the 31s because I don't think the 235 is going to make a noticeable. I've driven my friend's 4 banger auto with 235 BFGs and they look great, but after having my 4.0L I couldn't ever buy a 4cyl. It's simply just a dog. I just don't think the 2 inches difference in tire size is really going to make that much a difference.
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Old 09-10-2010, 08:33 PM   #5
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Never considered that. How difficult of a project and will it give me the power in 5th gear I want?
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Old 09-10-2010, 09:02 PM   #6
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You need a 4.0 liter
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Old 09-10-2010, 09:11 PM   #7
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I run 235/75/15s goodyear duratracs on my tj, They look good and I get a lot of compliments on them I have no regreats on getting them instead of 31's. They were cheaper and I get better MPG's with them. I do have a 4.0 with 3.73's so its hard for me to say if you will be happy with them as far as the four banger goes .
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Old 09-10-2010, 09:37 PM   #8
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Quote:
Originally Posted by tma300 View Post
Right now I have 31/10.5/15 kumho tires. They look great but I do not off road and my 4 cylinder motor cannot turn them over on the highway. I was looking at 235/75/15 but will I be happy with those or do I need to go even smaller?
What do you have an automatic transmission? I have stock 2005 4 banger with manual transmission and 31x10.5 and have no problem with the highway. Was doing 80 mph today on the interstate.
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Old 09-10-2010, 09:47 PM   #9
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I have a manual transmission but going 80 on the interstate is out of the question unless I put it in neutral and tow it behind my camaro. I know I need a 6cyl but I just wanted some tips to get more out of my 4cyl.
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Old 09-11-2010, 07:03 AM   #10
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I don't think smaller tires will make much difference. I went from stock tires to 235/75 then got 15x8 cast rims with 31x10.5 BFG's and the only difference is my speedo is off. From all of the posts I have read on 4cyl some just don't perform as well as others. My 4 banger acts like an addict chasing a crack wagon.
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Old 09-11-2010, 09:15 AM   #11
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Quote:
Originally Posted by Wildkarde View Post
I run 235/75/15s goodyear duratracs on my tj, They look good and I get a lot of compliments on them I have no regreats on getting them instead of 31's. They were cheaper and I get better MPG's with them. I do have a 4.0 with 3.73's so its hard for me to say if you will be happy with them as far as the four banger goes .
Do you ever take your jeep on trails with those tires? I have the same ones and I was wondering how they'd hold up. Do you have any lift in there?
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Old 09-11-2010, 09:34 AM   #12
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I have never been off road and I do not have a lift. Any thoughts on regearing? My jeep acts more like my wife when I want some sex than an addict chasing a crack wagon!
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Old 09-11-2010, 10:26 AM   #13
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I have never been off road and I do not have a lift. Any thoughts on regearing? My jeep acts more like my wife when I want some sex than an addict chasing a crack wagon!
once you said "I do" it's game over...

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