Spare tire size - JeepForum.com

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post #1 of 29 Old 03-27-2013, 09:55 AM Thread Starter
thumper450
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Spare tire size

I have a 93 gwagoneer 318 all time 4wheel drive 3.73 w/open diffs. I am running 30-9.50-15 ko's still have original 225/75/15 spare. My next tires will be 31/10.50/15 do I need to match my spare? At least in size.

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post #2 of 29 Old 03-27-2013, 10:02 AM
KingtheZJ
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yes. with the 249 you want to

'88 XJ
'98 ZJ on 37s and tons
'02 Chevy 2500HD 8.1
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post #3 of 29 Old 03-27-2013, 11:02 AM
ejschultz
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Yup, and you probably should have had a matching size spare with the 30s as well. If you're not lifted, you're not getting away without trimming to fit those 31s.

97 ZJ - 5.2L, 242, 4" IRO lift w/short arms & adj. TBs, JKS Discos/BPEs, DT3000s, Aussie'd 44A, sliders, bumpers, bunch o' skids, 31" Duratracs on 15x8s
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post #4 of 29 Old 03-27-2013, 11:05 AM
PolkaPower
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Yes you need 5 matching tires and rotate the spare in with oil changes.
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post #5 of 29 Old 03-27-2013, 01:06 PM Thread Starter
thumper450
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I've got a 2" bb lift, 1.25" spacers on the rear and an arb front bumper so I shod be ok on the 31's.
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post #6 of 29 Old 03-27-2013, 01:19 PM
dnuccio
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Do not even use the stock spare with 30 inch tires. You will destroy the viscous coupler in the transfer case

Reliability is relative
R.I.P. Ratmonkey
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post #7 of 29 Old 03-27-2013, 01:30 PM Thread Starter
thumper450
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Guess I've been lucky the spares never been on the ground. Goodyear invicta blue letters and all
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post #8 of 29 Old 03-27-2013, 01:31 PM
ejschultz
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The stock tire size is a 28.3" tire. FYI.

97 ZJ - 5.2L, 242, 4" IRO lift w/short arms & adj. TBs, JKS Discos/BPEs, DT3000s, Aussie'd 44A, sliders, bumpers, bunch o' skids, 31" Duratracs on 15x8s
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post #9 of 29 Old 03-28-2013, 02:08 AM
AmishFury
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you people with factory full size spares disgust me... i had to go find a rim to get my full size spare
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post #10 of 29 Old 03-28-2013, 02:43 AM
KoreaZJ
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Quote:
Originally Posted by AmishFury View Post
...i had to go find a rim to get my full size spare
Same here, mine came with a donut spare, luckily never needed to use it. Missed the TSB/recall for 249 TC's for the full size spare.
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post #11 of 29 Old 03-28-2013, 05:21 AM
98LIZJ
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What about using the stock spare with 31x10.5x15 but just not using 4wheel? Still bad?
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post #12 of 29 Old 03-28-2013, 05:44 AM
Texas ZJ1
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If you have the 249 transfercase yes, that's a bad idea.

Hunter

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08 Z71 Suburban, front leveling kit with rear spacers. 285/65 18s Nitto TerraGrappler G2s

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and 33 Bridgestone Duelers
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For your performance needs:

kolak@kolakperformance.com
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post #13 of 29 Old 03-28-2013, 07:10 AM
PolkaPower
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Quote:
Originally Posted by 98LIZJ View Post
What about using the stock spare with 31x10.5x15 but just not using 4wheel? Still bad?
With a 249 you are always in full time. If you have 2wd then you don't have a 249.
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post #14 of 29 Old 03-28-2013, 07:24 AM
98LIZJ
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Yea I have the 242. So with those size tires and only in 2wheel the stock spare can still be used?
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post #15 of 29 Old 03-28-2013, 08:57 AM
dnuccio
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It could, but I wouldn't do it for an extended period of time. I wouldn't use it any longer than getting to the local tire shop

Reliability is relative
R.I.P. Ratmonkey
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