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Spare tire size

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Old Oct 11, 2020 | 09:52 PM
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Spare tire size
2020 f150screw picked up 2 weeks ago. Checking it out and noticed spare tire size is 275-60-18. Tires on truck are 275-55-20, what’s up with that?
 
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Old Oct 11, 2020 | 09:55 PM
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Thats correct, same outside diameter.
 
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Old Oct 11, 2020 | 09:55 PM
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Howdy Alberta brother. Now I'll have to go crawl under my 2020 and see what it is. I would have guessed 275-65-18, but I'll admit I haven't looked.
 
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Old Oct 11, 2020 | 09:59 PM
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Sorry 275-50-18
 
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Old Oct 11, 2020 | 10:14 PM
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The spare tire size is shown on the door jamb sticker.
 
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Old Oct 11, 2020 | 11:26 PM
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Old news, but always an irritating thing for a new owner. I know i was thrilled, even though I expected it. Kinda.

https://www.ford-trucks.com/forums/1...hed-spare.html

https://www.ford-trucks.com/forums/1...s-to-20-a.html

https://www.ford-trucks.com/forums/1...off-brand.html
 
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Old Oct 12, 2020 | 07:43 AM
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Originally Posted by ford390gashog
The spare tire size is shown on the door jamb sticker.
you (of course) are correct, I don't need to crawl underneath, I had a photo of that door jamb sticker saved.
on my 2020 F150, factory spare is 255/70/18 and my "regular" wheels are 275/55/20. I think they use a few different spare tire sizes based on whatever is cheapest that day.


 
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Old Oct 12, 2020 | 09:58 AM
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Originally Posted by ford390gashog
The spare tire size is shown on the door jamb sticker.
I did not know that. That third tire there never phased me. I got lucky - all the same size.



 
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Old Oct 12, 2020 | 01:01 PM
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It is fascinating how many different tires you can get on these trucks between the various option packages.
 
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Old Oct 12, 2020 | 02:52 PM
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I have a Wrangler 18" 255/70 on a steel wheel with a lower weight rating than the four on the truck :-/
 
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