Need to reprogram true tire diameter 37" mtr k's
01-09-2016 | 01:46 PM
#31
JK Jedi Master
Joined: Jan 2008
Posts: 11,463
Likes: 162
From: Austin <--> Colorado Springs
Just to give everyone something else to ponder ... or argue about.
Using the above trial and error method with the procal (and then measuring to verify height) I found that my tires were 33.5" tall.
A few months later I bought a Flashpaq. Went back to stock on the procal, plugged that height in with the flashpaq, and my speedo no longer matched the gps.
Using the above trial and error method with the procal (and then measuring to verify height) I found that my tires were 33.5" tall.
A few months later I bought a Flashpaq. Went back to stock on the procal, plugged that height in with the flashpaq, and my speedo no longer matched the gps.
01-09-2016 | 01:56 PM
#32
Super Moderator
Joined: Feb 2012
Posts: 3,068
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From: Bunnlevel, NC
03-08-2016 | 01:47 PM
#33
Thread Starter
JK Junkie
Joined: Jan 2012
Posts: 2,828
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From: Auburn Maine
03-09-2016 | 09:52 AM
#34
JK Freak
Joined: Apr 2009
Posts: 772
Likes: 31
From: Colorado
At street pressure lay a straightedge across the highest point of the front tire. Measure from the ground to the underside of the straightedge. That's your true diameter. If the speedo is still off my hunch would be you have the wrong gear ratio programmed.
03-09-2016 | 01:11 PM
#35
Thread Starter
JK Junkie
Joined: Jan 2012
Posts: 2,828
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From: Auburn Maine
Matthew
