Spare tire size?
Thread Starter
Senior Member
Joined: Mar 2012
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From: NC
Spare tire size?
I have 2016 XLT 4WD with the 20" Hankook tires. I was checking around on it and finally noticed the spare underneath is a Goodyear Wrangler but in an 18" size. I thought it was unwise to run different size tires. If it's just to a tire shop maybe then it's ok?
Curious to hear from you regarding mismatched tires even run on a very limited basis.
Curious to hear from you regarding mismatched tires even run on a very limited basis.
Member
Joined: Sep 2015
Posts: 94
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Its tire size that matters, not wheel size. As long as the overall height of the tire is the same then no problem. Also their is no limited slip in either diff, so each side can spin at different rates without breaking anything. Primarily though, I'm sure the tires are the same height even if the rim size is different.
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Joined: Dec 2015
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From: St. Louis, MO
As long as the outer diameter of the tires is the same it shouldn't hurt if you are just driving to where you can get the original tire fixed.
The stock 18" 4x4 tires are 275/65/18's and the stock 20" 4x4 tires are 275/55/20's. Those differ by .6% height wise (the 20's are .2" shorter). The worst thing that could happen is it freaks your ABS/traction control out until you get the 20" wheel back on there.
If you think about it though, most compact cars have a donut for a spare, which is usually a lot smaller in diameter than the stock tires. I've never had to deal with that situation as all my newer cars (with electronic aides) have all had stock sized spares.
The stock 18" 4x4 tires are 275/65/18's and the stock 20" 4x4 tires are 275/55/20's. Those differ by .6% height wise (the 20's are .2" shorter). The worst thing that could happen is it freaks your ABS/traction control out until you get the 20" wheel back on there.
If you think about it though, most compact cars have a donut for a spare, which is usually a lot smaller in diameter than the stock tires. I've never had to deal with that situation as all my newer cars (with electronic aides) have all had stock sized spares.
Last edited by moguy1973; Apr 4, 2016 at 03:54 PM.
Thread Starter
Senior Member
Joined: Mar 2012
Posts: 113
Likes: 14
From: NC
As long as the outer diameter of the tires is the same it shouldn't hurt if you are just driving to where you can get the original tire fixed.
The stock 18" 4x4 tires are 275/65/18's and the stock 20" 4x4 tires are 275/55/20's. Those differ by .6% height wise (the 20's are .2" shorter). The worst thing that could happen is it freaks your ABS/traction control out until you get the 20" wheel back on there.
If you think about it though, most compact cars have a donut for a spare, which is usually a lot smaller in diameter than the stock tires. I've never had to deal with that situation as all my newer cars (with electronic aides) have all had stock sized spares.
The stock 18" 4x4 tires are 275/65/18's and the stock 20" 4x4 tires are 275/55/20's. Those differ by .6% height wise (the 20's are .2" shorter). The worst thing that could happen is it freaks your ABS/traction control out until you get the 20" wheel back on there.
If you think about it though, most compact cars have a donut for a spare, which is usually a lot smaller in diameter than the stock tires. I've never had to deal with that situation as all my newer cars (with electronic aides) have all had stock sized spares.
Stimpy you Idiot!
Joined: Aug 2019
Posts: 84
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From: San Diego
I have 2016 XLT 4WD with the 20" Hankook tires. I was checking around on it and finally noticed the spare underneath is a Goodyear Wrangler but in an 18" size. I thought it was unwise to run different size tires. If it's just to a tire shop maybe then it's ok?
Curious to hear from you regarding mismatched tires even run on a very limited basis.
Curious to hear from you regarding mismatched tires even run on a very limited basis.
Last edited by davemish; Nov 24, 2019 at 12:23 AM.
Senior Member
Joined: Feb 2017
Posts: 689
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From: Tennessee USA
I wonder if the manufacturers have agreements with some tire consortium or something to do this to keep us from getting another 20% wear on tires by putting the spare in rotation. Just a random thought I had.
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I have a 2017 XL STX with 275/55r/20's with a 265/55r/17 spare. The link below allows you to compare differing tire sizes. You can have each size appear next to each other or as an overlay. In my case the two sizes have an almost identical height. The display shows it clearly.
https://www.tacomaworld.com/tirecalc...5r20-265-70r17
https://www.tacomaworld.com/tirecalc...5r20-265-70r17
Yeah... yours is smaller and you dont have 4WD.
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Joined: Aug 2019
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that would require the wheel on your spare to be the same expensive shiny chrome/painted wheel that's on the other 4 tires, and it would make tire rotations more expensive since 99.5% of people don't do it themselves. tire rotations are already not worth the cost of doing them.