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Tire Size

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Old 02-28-2011, 05:24 PM
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Originally Posted by 98-XJ
I have 31x10.5s on my stock wheels, but I didn't do an adj track bar after my lift and at full right turns I rub the LCA. I need to get some rims with 3.5-4" BS i believe but it's nothing I can't live with for now. The previous owner put these tires on and I did the lift. When I first got the car they rubbed bad! But I had drastically sagging suspension. I thought the 31s looked too big stock, now they look too small.

I picked up another matching steelie at the JY to use for my full size spare, and it had a 235 on it... not too different from the 31", may be just right. My "31s" measure 29.5" with weight on them and they're a bit worn.

hes not talking any kind of lift here... theres plenty of threads for that... and if you run that spare tire your gonna blow your transfer case... i bought a 97 XJ with a RE super flex lift and dummy had worn 33's on the back and new 32's on the front... blew his transfer case up... which was good for me cause i got the jeep for $600... lol...

moral of the story is... it doesnt take much... 3% difference in gears is max i know... id imagine tire size difference would be the same...
Old 02-28-2011, 06:11 PM
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Originally Posted by JuhJuhJeep
I have a 98 Classic, stock wheels and 235/75/15's. No rubbing at all.
X2, except it's a sport
Old 02-28-2011, 06:34 PM
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Originally Posted by djb383
Actually (mathematically), 235/75/15 is 28.9" tall and 225/75/15 is 28.3" tall for a difference of .60", not .06". 235 is .39" wider than 225.
Every tire manufacturers tire mold is different so mathamatically you may get roughly 29 inches but it may be plus or minus one inch depending on the company. I have mastercraft courser at2s in 235/75r15 and if you measure them they come out to 30x9 as for my friends scramblers in 235/75r15 come out to 29x9 so it varys.
Old 03-01-2011, 12:23 AM
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Originally Posted by wildbill1
Why would contact surface be less with a wider tire? It seems like there would be a larger contact surface. Am I missing something?
Upss... No, am missing. U're 100% right. djb383 right too. Sorry guys....
Old 03-01-2011, 12:51 AM
  #20  
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Originally Posted by huntingman2706217

hes not talking any kind of lift here... theres plenty of threads for that... and if you run that spare tire your gonna blow your transfer case... i bought a 97 XJ with a RE super flex lift and dummy had worn 33's on the back and new 32's on the front... blew his transfer case up... which was good for me cause i got the jeep for $600... lol...

moral of the story is... it doesnt take much... 3% difference in gears is max i know... id imagine tire size difference would be the same...
Yeah I know, I said it had a 235, it now has a 31". I meant 235s all around might be ok for him.

Wow I didn't know that could happen to the t case, makes sense I just never thought about it. Thanks for the heads up.
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