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-   -   Full size spare is different size from other tires (http://www.jeepgarage.org/f109/full-size-spare-is-different-size-from-other-tires-14602.html)

JoeSchmoe007 10-31-2010 05:04 PM

Full size spare is different size from other tires
 
My tires are 265/60/18 (part of an X package on Laredo)

I also have towing package that is supposed to include full size spare.

However, I checked my spare today and it is 245/60/18. Is this correct?

azzolij 10-31-2010 05:28 PM

Re: Full size spare is different size from other tires
 
It's full size compared to a donut...

A 265 won't fit in the space they carved out for the spare.

I should probably go check mine to see how much smaller it is compared to the
265/50/20 tires.

JoeSchmoe007 10-31-2010 05:30 PM

Re: Full size spare is different size from other tires
 
Quote:

Originally Posted by azzolij (Post 293704)
It's full size compared to a donut...

A 265 won't fit in the space they carved out for the spare.

I should probably go check mine to see how much smaller it is compared to the
265/50/20 tires.

Do you know if spare includes TMPS sensor?

Red G8R 10-31-2010 05:51 PM

Re: Full size spare is different size from other tires
 
I calculated and it's not quite the same diameter (slightly smaller, 29.6") as the regular tires (30.5")but remember it's just a temp. Ideal replacements should have a diameter within 0.5" so as not to put off the speedometer. I don't know about the TPMS.

BTW, my '02 Overland had same size spare on matching rims with TPMS. The monitor not only displayed the psi of all 4 driving tires but monitors the spare also (low warning).

Scottina06 10-31-2010 06:17 PM

Re: Full size spare is different size from other tires
 
youll be fine.....LOL

moosehead 10-31-2010 06:27 PM

Re: Full size spare is different size from other tires
 
you flatted first 48 hrs?

JoeSchmoe007 10-31-2010 06:36 PM

Re: Full size spare is different size from other tires
 
Quote:

Originally Posted by moosehead (Post 293735)
you flatted first 48 hrs?

No, I was just checking everything out

azzolij 10-31-2010 07:59 PM

Re: Full size spare is different size from other tires
 
Full size spare tires have a sensor. At least that's what the owners manual
says starting at page 419. However, the EVIC only reports on sensors
that are in tires that are mounted on the vehicle. According to the manual there
is a sensor at each wheel that reads the sensor in the tire.

Milous 11-03-2010 02:42 AM

Re: Full size spare is different size from other tires
 
^ Yes, full-size spares have a sensor. While the tire pressure is not displayed in the EVIC, a warning message will appear if the spare pressure drops below the theshhold.

Joe, if you want to verify sensor & message warning just remove your spare and take a spin around the block. Or, if you have a compressor just deflate the spare a bit and take a short drive.

cherokee619 11-03-2010 07:55 AM

Re: Full size spare is different size from other tires
 
i just checked my spare and all cause i had warning light. but can someone tell me how many psi. does it take for warning light to come on??

Milous 11-05-2010 12:39 AM

Re: Full size spare is different size from other tires
 
Quote:

Originally Posted by cherokee619 (Post 295250)
...can someone tell me how many psi. does it take for warning light to come on??

http://www.wk2jeeps.com/wk2_tpms.htm#THRESHHOLD

MSCA 11-05-2010 05:48 AM

Re: Full size spare is different size from other tires
 
That's lame. A full-size spare should be the same exact size as the other four tires. To call it a full-size spare when it's clearly smaller than the rest of the tires is misleading. Sure, it's not a donut, but it is smaller than the others! I'm really surprised they would use a 9/10 scale tire for the spare...


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