L-R rear tire tread depth difference -- will this hurt the limited slip diff? - JeepForum.com
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Unread 05-18-2006, 11:30 AM   #1
jo8243
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L-R rear tire tread depth difference -- will this hurt the limited slip diff?

One of my rear tires has 6/32" tread depth left. The other has 9/32" depth left. This happened because one tire was damaged and had to be replaced.

I have a limited slip rear diff on my '02 WJ 2WD. Will this hurt the diff due to the difference in rolling diameters? Or can it handle this much difference?

Thanks

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Unread 05-18-2006, 11:34 AM   #2
ArloGuthroJeep
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If you have two tires with the same diameter rotate them so the ones that are the same are in the back.
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Unread 05-18-2006, 01:10 PM   #3
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I don't have two the same size.

Anyone know the answer?
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Unread 05-18-2006, 01:16 PM   #4
ArloGuthroJeep
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So you have 4 different tires? None of them are from the same original set? If that is the case do it right and get 3 new tires to match the new one you just put on. With a tire size difference it'll wear down the LSD faster then with equal size tires...
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Unread 05-18-2006, 01:18 PM   #5
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If it's 2wd I don't think it will hurt anything. Just put the closest 2 tires in the back.

I've never heard of that hurting LSD before. Just the AWD t-cases which you don't have.
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Unread 05-19-2006, 08:31 AM   #6
jo8243
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Quote:
Originally Posted by ArloGuthroJeep
With a tire size difference it'll wear down the LSD faster then with equal size tires...
Anyone know if this is true for sure or not?
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Unread 05-21-2006, 09:28 AM   #7
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Ttt...........
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Unread 05-21-2006, 09:32 AM   #8
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Quote:
Originally Posted by jo8243
Anyone know if this is true for sure or not?
Yeah it is

How did you get lsd on 2wd?
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Unread 05-21-2006, 10:25 AM   #9
jo8243
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Quote:
Originally Posted by 02GrandCherokee
Yeah it is

How did you get lsd on 2wd?
You buy it equipped like that. It was an option, and it didn't matter 2WD/4WD.

So even 3/32" difference will be a problem?
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Unread 05-21-2006, 03:09 PM   #10
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Quote:
Originally Posted by jo8243
... So even 3/32" difference will be a problem?
That difference is less than 1% in the case of a 28" to 29" tire diameter. Although I can't guarantee that small difference wouldn't matter as far as wear on the LSD is concerned, I would bet that it won't. Tire pressure differences and unequal loading within the vehicle can cause rolling radii differences that large, and I think the LSD was designed to tolerate such differences. Certainly the LSD can tolerate wheel speed differences much larger than that when turning corners or when one wheel is slipping, but of course those differences don't last for a long time.
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