2004 - 2008 F-150
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Old Feb 17, 2006 | 11:17 PM
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18 To 20s

Want to swap out my 18 inch fx4 factory wheels with factory 20 inch wheels is there going to be a recalibration issue with the speedo.
 
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Old Feb 17, 2006 | 11:20 PM
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Depends on the tire size
 
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Old Feb 17, 2006 | 11:26 PM
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I am not sure it is whatever the ford factory 20 inch wheels come with, it is Pirrellis I believe.I just want to make the swap easy on the dealer so he can;t say know,I ordered it with 18S but would prefer the 20 inchers.
 
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Old Feb 17, 2006 | 11:28 PM
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They are probably the same size.
 
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Old Feb 17, 2006 | 11:35 PM
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I will have to measure to be sure, it is a warranty issue. they won:t do the swap unless it does not affect the speedo.
 
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Old Feb 18, 2006 | 08:50 AM
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They can probably recalib the computer..
 
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Old Feb 18, 2006 | 09:08 AM
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If they are overall the same size including the tire of course, than you'll be fine.
 
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Old Feb 18, 2006 | 09:37 AM
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The 20's run a 275/55/20 pirelli atr tire, that equals 32", which I think is the same height as a standard 4x4 18s tire. Post your stock tire size and I can tell you if the speedo will be off.
 
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