Putting on a spare tire with rims awd.

[08grey]

I don't want to jinx myself but here it goes.

I have The spare tire on a yukon Denali that was original 20" oem rims on my truck. I currently have 26" rims on.

If I get a flat can i use the spare without doing damage to the differential it's on. I was told if you run two different size wheels in the same axel you can destroy the gears.


So can it be done. If so to what extent? How many miles would you be able to drive on it?

If not what size spare combination do I need to run?

 

[Nickleahy23]

tire size not rim size. If they are the same overall diameter you will be fine. even closeish will work for a short time. im takling like 31 vs 31.5

 

[08grey]

Yes that's what I meant. So I'm running 295 30 26. Is there a formula I can use to calculate ?

 

[NathanJax]

Yes that's what I meant. So I'm running 295 30 26. Is there a formula I can use to calculate ?

http://www.rimsntires.com/specspro.jsp

 

[OHSIXX]

Put the sizes in and presto

http://www.discounttiredirect.com/direct/infoTireMath.do

 

[08grey]

Thanks Nathan. Looks like I need to find a spare with a 275 70 17 - 285. To match up as close as possible

 

[08grey]

285 70 17 looks real close to 295 30 26. What do you guys think? Would you feel safe driving several miles on one as a spare???

 

[akbrener]

if you are 2wd and you ahve a flat in the rear, you can always take the extra time and put your front wheel on the back, then the spare up front.

 

[08grey]

Can I put a 285 tire on a 17" steel rim spare?