Should i regear to 4.88 or 5.13 for 33" tires - JeepForum.com
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Unread 04-16-2014, 11:56 AM   #1
Nicyutrick
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Should i regear to 4.88 or 5.13 for 33" tires

Which one is prefered? This car is going to be on the freeway more than the dirt.

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Unread 04-16-2014, 12:03 PM   #2
biffgnar
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Your axles (D30 & D35) max out at 4.88
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Unread 04-16-2014, 12:05 PM   #3
freeskier93
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I'm personally a fan of 4.88 with 33s and the 5spd manual. With your 6spd manual overdrive (6th) isn't quite as tall so you'd be running a bit higher RPMs at highway speeds. Either 4.56 or 4.88 would be good choices in my opinion, 5.13 would be to much and might not be possible depending on the axles you have.
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Unread 04-16-2014, 12:26 PM   #4
Jerry Bransford
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Quote:
Originally Posted by Nicyutrick View Post
Which one is prefered? This car is going to be on the freeway more than the dirt.
What engine and transmission do you have? And is it a Rubicon?

HINT: Fill out your Profile as requested in the Stickies at the top of the threads so we don't have to ask these types of questions.
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Unread 04-16-2014, 12:28 PM   #5
biffgnar
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Originally Posted by Jerry Bransford View Post
What engine and transmission do you have? And is it a Rubicon?

HINT: Fill out your Profile as requested in the Stickies at the top of the threads so we don't have to ask these types of questions.
While his profile could use some work, doesn't it identify the engine and transmission? And those answers tell us whether it is a Rubicon.
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Unread 04-16-2014, 01:20 PM   #6
Jerry Bransford
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His profile was empty when I checked it earlier today.
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Unread 04-16-2014, 07:35 PM   #7
jaspepp
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I run the 2.5 with 33's and 4.88 and think it is acceptable.
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Unread 04-16-2014, 07:46 PM   #8
robncar
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While this post is strikingly similar to your poll on the same topic...

http://www.jeepforum.com/forum/f9/do...tires-2330785/

4.88 with 33's, 4-cylinder, and manual transmission.

Your axles are limited to 4.88, 5.13 is NOT an option.

I'll also throw this in...

A bog is worse for an engine than slightly elevated RPM's. Just change the oil and filter at 3K intervals.
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Unread 04-16-2014, 11:08 PM   #9
Nicyutrick
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So now the question is everyone, 4.56 or 4.88?! Alot of people are saying 4.88 why? Why not 4.56?
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Unread Yesterday, 06:41 AM   #10
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Quote:
Originally Posted by robncar View Post
While this post is strikingly similar to your poll on the same topic...

http://www.jeepforum.com/forum/f9/do...tires-2330785/

4.88 with 33's, 4-cylinder, and manual transmission.

Your axles are limited to 4.88, 5.13 is NOT an option.

I'll also throw this in...

A bog is worse for an engine than slightly elevated RPM's. Just change the oil and filter at 3K intervals.
Unless he swaps out axle's. But, we know he won't.
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Unread Yesterday, 06:54 AM   #11
joe_jeep
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2715 rpm at 65
2920 rpm at 70

its the only good option for a 4cyl, and the 4cyl wont mind the rpms.
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Unread Yesterday, 07:04 AM   #12
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Originally Posted by Nicyutrick View Post
So now the question is everyone, 4.56 or 4.88?! Alot of people are saying 4.88 why? Why not 4.56?
4.88 so you have more low end.

You do turn slightly higher RPM on the highway (as Joe noted above with the exact #s), but those 200 extra RPM on the highway are worth the trade off for the better low end power.
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Unread Yesterday, 08:44 AM   #13
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Unless he swaps out axle's. But, we know he won't.
Yep, didn't think he'd swap axles in a 4-cylinder TJ. Also, he's still bringing up 4.56. You can't save them all...
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Unread Yesterday, 10:17 AM   #14
Nicyutrick
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Alright cool! Thanks everyone for all the help! 4.88 it is!
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