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Old Dec 16, 2019 | 08:05 AM
  #16  
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Originally Posted by Joe T
What size is the stock spare on the 20 inch wheel trucks? Saves me climbing under this thing on a gravel driveway.
It’s a 275/70R18E AT on an 18” steel wheel. From the 2020 SD Order Guide (same for the 2017-19):






HTH,
Jim / crewzer
 
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Old Feb 24, 2020 | 04:32 PM
  #17  
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Bought 20" and have an 18" spare... Any solutions?

So I bought a 2018 Lariat with 20" rims back in November 2017. I messed up my sidewall of my front tire (nasty pothole and rebar) and needed to get it changed. Dealership said they had to order the tire so I asked them to put on the spare. My service rep comes back and says... "Can't put on the spare, it is the wrong size tire". I thought he was joking. He said it becomes a safety issue by putting on the 18" spare when the other tires are 20". I think it is about 1 in difference in total circumference so the 18" spare would have 3" less travel on a full rotation. He said it would basically be sliding down the road.

So what can I do now? I only got the upgraded 20" due to the salesman convincing me that they were better and would look a lot nicer. I would never have bought the 20" if I knew I would have a matching spare.

The new tire came in the next day and the mechanic said there was not enough room to mount the 20" tire in the spare wheel well due to the heat shield guarding against the exhaust.

Any ideas? Will Ford replace my rims and wheels with 18" or at least go in at 50% with me?
 
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Old Feb 24, 2020 | 04:58 PM
  #18  
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Read post #10, been down this road. Here is a pic of my stock 20” spare wheel and tire, it fits




In regards to the other questions:

Ford might have replaced them when you bought the new truck but not now.

No, Ford will not give you one cent towards the right spare. Plan on shelling out about 700 dollars for the wheel and tire.
 
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Old Feb 26, 2020 | 01:16 PM
  #19  
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If anyone is interested I have 3 platinum wheels that I'm looking to part with - will sell individually - for those who want a full size matching wheel for your spare.
 
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Old Feb 26, 2020 | 04:30 PM
  #20  
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Look in your manual for the tire rotation plan. If the plan includes moving the spare to one of the four positions then the spare has to match the four positions.

 
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Old Feb 26, 2020 | 07:14 PM
  #21  
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Does.the spare is matching on the 2020 f450?
 
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