Thread: Speed Calibration and Gryphon
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  #13  
Old Wed, April 8th, 2009, 03:34 PM
Desert Racer Desert Racer is offline
Bacon King
  
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Forgot to mention I changed the factory computer tire size to 275/70/17 would that make a difference? I put on a 265/60/18 and my speedo is off by 2 under 65 and off by 5 above 65mph.
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2007 Supercab few mods here and there