tire size and mph

Predator support for Ford gas vehicles

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twisted1
Posts: 6
Joined: Mon Mar 12, 2012 10:45 pm

tire size and mph

Post by twisted1 »

2008 f150 5.4..... i have 305/70-17 on my truck and cant figure out how to make speedo read correct. i have 373 gears also. ive tried revs per mile and nov but speedo still reading 5mph faster then im going....
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mikel
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RE: tire size and mph

Post by mikel »

Are the gears stock?
Mike Litsch
DiabloSport Brand Manager
Diablo Tech support by phone:
561-908-0040
M-F 8:00 AM to 5:00 PM EST
[email protected]
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twisted1
Posts: 6
Joined: Mon Mar 12, 2012 10:45 pm

Post by twisted1 »

i measured my tires an figured it out. im only 1-3 mph off now
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