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Old 02-01-2012, 02:05 AM   #1
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spare tire different size

Can I run a 29" spare with the rest of the tires 31"?
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Old 02-01-2012, 04:25 AM   #2
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No. Don't do it.

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Old 02-01-2012, 04:26 AM   #3
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yes you can, but make sure whatever axle you are running the smaller spare on is an open differential. If you have full time lockers then no you want the same size spare. Now that minor of a size maybe okay if you have lockers and are driving on softer surfaces for a short distance.

For instance if you have a fulltime rear locker, and get a rear flat, then you'ld have to take a fullsize off the front and put on rear, then put smaller one up front.
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Old 02-01-2012, 11:53 PM   #4
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for temporary use, you'll be fine

they used the donut spares in cherokees for years
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