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-   -   tire size (http://forum.gopowerhungry.com/showthread.php?t=938)

dan68anderson Sun, April 12th, 2009 05:25 PM
tire size
 
alright so I put larger tires on and adjusted it in the gryphon; the gryphon and speedometer is showing about 1-2 mph slower than my gps shows...would i increase the number that i put into the gryphon or decrease it? this whole math thing is killing me :shrug:

thanks for your help :2thumbs:

Jackpine Sun, April 12th, 2009 06:30 PM
Quote:
Originally Posted by dan68anderson (Post 7618)
alright so I put larger tires on and adjusted it in the gryphon; the gryphon and speedometer is showing about 1-2 mph slower than my gps shows...would i increase the number that i put into the gryphon or decrease it? this whole math thing is killing me :shrug:

thanks for your help :2thumbs:
You'd increase the tire size, probably by about 2%. Take the number you are using now, multiply it by 0.02 and add that result to the value you are currently using.

- Jack

dan68anderson Tue, April 14th, 2009 10:06 AM
jackandjanet, thank you for your help! I increased it by 2% this morning and it perfectly matched the mph my gps was showing

Jackpine Tue, April 14th, 2009 01:11 PM
Great! Wish all problems could be so easily solved!

- Jack


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