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20" down to 18" possible?

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Old Jan 12, 2016 | 08:10 PM
  #1  
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Lees350
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20" down to 18" possible?

I have a 16 F350 with the 20" rims. I was wondering if anyone knows if it is possible to drop down to an 18" rim and have the computer settings changed to reflect the smaller tire size. So the speedo is correct, mileage etc.

Main reason to go from 20 to 18 is the price and variety of snow tires. I'd like to get a set of 18" rims and have them just for snows. Then switch back to 20's in the summer.
 
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Old Jan 13, 2016 | 04:32 PM
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Pretty sure you can bring it to your ford dealership and have them do it...or there are speedometer calibration tools you can buy if you plan on switching a lot back and forth..
 
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Old Jan 14, 2016 | 12:00 AM
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From: Boise
If you get a similar height tire everything will be the same. If you get a different height your speedo could be just slightly off which is no big deal imo.
 
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