Spare Tire Question

[BoyInaChevyTruck]

just upgraded from my 17's to 20" rims off of a tahoe. What can I do about the spare tire. I know the 17 inch one is useless to me now, can I get fit a full size 20" tire and rim in that cubby hole?

 

jay

[Matt_]

why do you think the stock 17" one is useless?

 

Rim diameter doesnt matter.... overall TIRE diameter is what matters. Are your new tires bigger?

[Chris]

when you get 20's from the factory, your spare is still a 17

[oldscsc]

I'm also curious about this. I went from the stock NBS 245/65/17 (I believe) to my current 265/65/18's and was wondering if my spare would do me any good. Good topic!

[Chris]

no it wont you need a 265/70r17

[Matt_]

I'm also curious about this. I went from the stock NBS 245/65/17 (I believe) to my current 265/65/18's and was wondering if my spare would do me any good. Good topic!

 

Your spare will get you to a shop to get your tire repaired/replaced... but it won't be good for a long distance or high speed trip.

[Chris]

so if you change to the size i gave you it will last til you can afford a new tire or can get it fixed

[dlstewart01]

Service Information 2005 Chevrolet Chevy K Silverado - 4WD | Sierra, Silverado (VIN C/K) Service Manual | Document ID: 2222571

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#02-03-10-001D: Spare Tire is a Different Size Than Other Tires - (Jan 12, 2009)

 

 

Subject: Spare Tire is a Different Size than Other Tires

 

 

Models: 2002-2009 Cadillac Escalade Models

 

2000-2009 Chevrolet Suburban, Tahoe

 

2002-2009 Chevrolet Avalanche

 

1999-2007 Chevrolet Silverado (Classic)

 

2001 GMC Sierra C3

 

2001-2009 GMC Yukon Models

 

2002-2009 GMC Sierra Denali

 

1999-2007 GMC Sierra (Classic)

 

 

This bulletin is being issued to supply additional information concerning the spare tire on the above vehicles. You or your customers may have noticed that the spare tire has a 16-inch diameter steel wheel or 17-inch diameter aluminum wheel while the road tires have a 17-inch, 18-inch, 20-inch or 22-inch diameter aluminum wheel. Although the spare tire has a different wheel diameter and may be a different brand, the rolling circumference is nearly identical to the road tires. The size difference will not cause a concern because the spare and the other tires will travel the same distance in one revolution.

 

This combination of non-matching tires is used most often on full-size trucks. These vehicles use a road tire and wheel combination that may be too large to conveniently fit the storage compartment space of the vehicle. The customer may not be able to easily remove the spare tire/wheel from the storage area because of its size and/or weight. A steel spare wheel, rather than an aluminum one, may be used since the spare is stowed under the vehicle where it is exposed to road and weather elements. A steel wheel is less likely to incur cosmetic damage while in the stowed position for long periods of time.

 

Please provide this information to your customers. Also, remind your customers of the importance of following the tire maintenance schedule as listed in their Owner Manual. Additional tire care information can be found by visiting www.gmtiresafety.com or contacting GM toll-free at 1-866-522-0505.

[BoyInaChevyTruck]

thanks. I think my 17's were 265's.. the 20's i have are just the stock 275/55's.

 

jay