Can I Use A Smaller Spare With 31" Tires? - Page 2 - JeepForum.com
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Unread 12-25-2012, 04:14 AM   #16
sAe23
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1995 XJ Cherokee 
 
Join Date: Apr 2009
Location: Los Angeles / SFV, California
Posts: 2,578
I've had my spare tire on the roof for about 4 months now.
It sits ON the roof, between two cross bars.
It's held down with two ratchet straps criss crossed over the top, hooked into the cross bar end caps.

In response to AZZY's comments:
3: Anytime you handle a spare tire, you're going to get dirty
2: I haven't noticed and handling (or MPG) loss with it up there (but then I don't drive like I stole it either!).
1: Er, well, the inspection guy may be right about this. I wonder if tires mounted to aftermarket roof racks are any more secure

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Unread 12-25-2012, 09:55 AM   #17
mschi772
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1997 XJ Cherokee 
 
Join Date: Apr 2012
Location: Racine, WI
Posts: 2,351
This might be of interest to you.

http://jeep-xj.info/HowtoSpareWheel32inch.htm
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Unread 12-26-2012, 10:21 AM   #18
Azzy
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1996 XJ Cherokee 
 
Join Date: Sep 2010
Location: Finleyville
Posts: 3,236
Quote:
Originally Posted by sAe23 View Post
I've had my spare tire on the roof for about 4 months now.
It sits ON the roof, between two cross bars.
It's held down with two ratchet straps criss crossed over the top, hooked into the cross bar end caps.

In response to AZZY's comments:
3: Anytime you handle a spare tire, you're going to get dirty
2: I haven't noticed and handling (or MPG) loss with it up there (but then I don't drive like I stole it either!).
1: Er, well, the inspection guy may be right about this. I wonder if tires mounted to aftermarket roof racks are any more secure
Handling a spare kept up high is a PITA especially if you have a lift.

Dont need to drive it crazy to notice the extra wind npize and the extra bit of tilt in a 35mph turn

I think most aftermarket racks are attahed to the gutter rail, much more secure.
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Unread 12-27-2012, 07:57 AM   #19
JTM1
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1988 XJ Cherokee 
 
Join Date: Sep 2008
Location: W.Houston, TX
Posts: 254
Yes, you can use the smaller tire as a spare. As point out by someone else, if you have TracLoc in the rear axle the different sized tires will cause it to heat up, but that is fine for short distances. If you need to drive longer distances and get a flat on your axle equipped with the TracLoc device, you can put your spare on the other axle and rotate a matching tire to replace the flat tire (put your spare on the front axle and rotate the front tire back to replace the flat).
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