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Modified JK Tech Tech related bulletin board forum regarding subjects such as suspension, tires & wheels, steering, bumpers, skid plates, drive train, cages, on-board air and other useful modifications that will help improve the performance and protection of your Jeep JK Wrangler (Rubicon, Sahara, Unlimited and X) on the trail.

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spare tire

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Old Jul 4, 2008 | 09:22 PM
  #11  
chuck45's Avatar
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From: Grand Junction, CO
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Originally Posted by racer83l
spend the $ and do it right.
Man I can't agree with you more. Spend the bucks, do it right, do it once. Whenever you do things in a hocky-dob fashion it always comes back to bite you in the butt at the worst possible time. And the fix always costs more than doing it right up front would have cost.
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Old Jul 4, 2008 | 10:36 PM
  #12  
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From: Lawrenceville, NJ
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Sell the 32" tire to get a matching 33's...it helps to subsidize the cost.

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Old Jul 6, 2008 | 12:46 PM
  #13  
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From: Virginia Woods
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Originally Posted by possumface
im going to 33" from 32" my spare is 32" could i use the 32" spare if emergency short distance if get a flat. would it hurt the diff even short drive
A 33'' tire is not nessarily 33''. Measure one mounted on the rim. The stock 255/75/R17 is 32.05 around. You could reduce the pressure in the opposite 33'' tire and run the 32'' spare with a few extra pounds and come up with a reasonable diameter match. I don't think a 1/2'' to 3/4'' diameter difference will cause any problem anyway. As an automotive professional I wouldn't give this possible problem a second thought...Why spend $150.00 extra when it's not necessary?
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Old Jul 6, 2008 | 09:27 PM
  #14  
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From: Lawrenceville, NJ
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Originally Posted by TEEJ
It would play havoc with your traction control/ABS...as the smaller tire would be seen as making more revolutions that the other tires, and therefore, to be slipping, causing the system to apply the brake algorithm to control wheel spin/make an emergency stop, etc.

That's why newer models with traction control, etc...COME with full sized spares....same if you have LSD, etc.

Another point to consider if you off road....if that 32 is the stock tire...and you are in terrain that killed your GOOD 33" tire...would your 32" stock tire be good enough to get you back out? (Would the terrain your 33" could not handle be able to be handled by your 32" tire?)



If you off road...at least anywhere that you NEEDED THE MODS YOU GOT TO GET THROUGH....then you need the spare to be able to functionally replace the blown tire...otherwise, you're in deeper doo doo, etc. (If you have your rig built-up to handle rougher terrain than you actually wheel in....so you didn't need the mods you bought, then of course you could limp out of the fire trail/easy terrain as best you could and be ok.

Any tire can get a flat, super swampers, MT/R's, Krawlers, etc....but some are harder to rip up than others...so, if you ARE limited (Budget, etc...) to a crappy spare....be smart, and do not wheel where you can get crippled up in a spot that makes your friends spend hrs dragging your ass back out.


Plan B - Only wheel with people who have a spare of the size you need, so you can borrow it to get back out....and hope they don't need it back before you're out again, etc.


Plan C - Pull all the fuses that control the confused computer functions...and drive out w/o the benefits of the electro-crutches....assuming you didn't NEED those crutches to get IN as far as you did before blowing the 33" tire, etc...assuming you do not have LSD or a locked axle powering that tire.

IE: If you off road....get a matching spare that can survive what KILLED your "good" tire.

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