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Old 12-06-2019, 02:01 PM
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New spare tire rotation

Hey everyone. I was recently gifted a spare tire. Brand new tire, same as I have under my Jeep right now. I never had a spare for it. I would like to be able to rotate this tire, but I'm concerned about the wear difference. The four under my Jeep right now have about 1/8-1/4'' less tread than the new spare. If I had to guess, maybe about 10,000 miles on them. I don't know what to do with this spare. I don't want it to just sit on the back of the Jeep and rot away from the sun. I feel like it's just going to get wasted. I really would like to rotate it in. Do you think I can do it without damaging my drive train? Thanks in advanced.

2002 Sahara 4.0 manual

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Old 12-06-2019, 02:53 PM   #2
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Put the new tire on the right rear... then rotate the other four until they all have the same amount of tread before you add the new one into the rotation

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Old 12-06-2019, 02:58 PM
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Put the new tire on the right rear... then rotate the other four until they all have the same amount of tread before you add the new one into the rotation
You don't think the tread difference will damage my diff?
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Old 12-06-2019, 03:48 PM   #4
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Nope
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Currently in the stable: ... 97 tj 4.0 5 speed stock....04 tj 4.0 auto 4" and 33's... 98 tj roller for future build... 94 yj sahara 4.5" RE and 33's... 92 yj sbc 3/4 ton axles and 38's... Cj5,7,yj,xj,ex mud dragster project

TJ dash speakers that actually rock! Kicker sub and amp in center console
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Old 12-06-2019, 03:52 PM
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Nope
Why do you say that? I'm just curious, I always that was an issue.
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Old 12-06-2019, 04:23 PM   #6
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If they only have about 10k on them, just move it into rotation now. Barely off schedule from if you had started with 5 brand new.
And that minimal difference isn't an affect on the diff or 4wd, it's AWD where those differences are much more problematic, mainly due to the viscous coupler that transfers power to the wherls. That is my understanding of it at least, having owned many Jeeps and Subarus.

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Old 12-06-2019, 04:57 PM
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Thank you. I'll put it on my RR
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Old 12-06-2019, 05:01 PM   #8
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If it were a significant size difference, it would be a different answer. For example if you had 31s and the spare was a 29 most of us would say leave it on the back. When I got my TJ in 2014 it had a tire with a plug on the back. It stayed there until last fall when I got new tires and bought 5. They are now on a five tire rotation. The upside is of course the tires will be on the Jeep longer as you spread the mileage of four across five and you always have a matching spare. The downside is of course you have to buy 5 instead of 4. Of course if money is tight, you can buy 4 and then buy the matching 5th when it comes time to rotate.
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Old 12-06-2019, 05:06 PM
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The new spare tire has about 1/4inch tread on it at most. I would rather rotate 5 if possible.
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Old 12-06-2019, 05:07 PM
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The new spare tire has about 1/4inch more tread on it at most. I would rather rotate 5 if possible.
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Old 12-07-2019, 06:46 AM   #11
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i had some bfg mudders and had a rock breach the sidewall with about 30.000 on the tires got a new tire. got to love road hazard rotated that one in never had an issue.but just got rid of them due to the noise about 8000 miles latter.
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Old 12-08-2019, 10:04 AM   #12
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Those were probably the BFG Mud Terrain KMs which came stock on the JK/JKU Rubicons and also on my Chief (based on the Sahara). They do get noisy. I have 19K on mine and already thinking of ditching them. At least they don't sing on the highway as badly as some tires do.

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