Sat, March 28th, 2009, 03:29 PM
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Bacon King
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Join Date: Jan 2009
Location: Central Coast, CA
Posts: 86
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Quote:
Originally Posted by kevins669
Hi all,
I have been trying to get my speedo and the gryphon to match.
I upgraded the tires in the 04 to 275/65R18...
The gryphon and my gps are pretty much on target, but the speedo is always 2 MPH higher...
No matter what custom tire size I enter.
Any thougts???
Thanks,
Kevin
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That's by design. Ford programs in a +3% bias in the speedo reading. If your Gryphon matches your GPS, it sounds like you're OK.
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2007 F150 XL, 4.6, Regular Cab, Gryphon Installed 2/2009
"voiding warranties since 1979"
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