Diablo tire calibration

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gigabyte3

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Just wondering what size people are using for thier diablo i2 intune tuner to make the speedometer read right for a 275/65/20 tire.....ive tried a few times to input this size in the tuner, and the tuner says successful, but i'm still 2 mph slower than what my cluster is reading, or what any gps ive had on me says im going.....
 

nateinva

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I'm in the same boat....You can enter an actual diameter in inches, which I've done, but still about 2mph slow.

I'm running 2756520s that are 34.3" tall. Haven't messed with it in a week or so but want to get it accurate.
 
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gigabyte3

gigabyte3

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Wondering if i should have posted this in a different section?...
 

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