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tuner adjust for tire size?

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tuner adjust for tire size?

Postby gentlejax [OP] » May 22 2020, 4:05pm

if I am running a non OEM tire size and input it in the Diablo then it will adjust for the speedo? I wanted to make sure thats the effect here.
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Re: tuner adjust for tire size?

Postby ricka182 » May 22 2020, 4:07pm

Yes it will correct your speedo..
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Re: tuner adjust for tire size?

Postby 06MonteSS » May 23 2020, 6:22am

do NOT go by the sidewall sizing.. you need to actually measure your tire height, from the ground to the top of the tire, and you'd use that inches amount to set the tire height/diameter...

so then you'd go to Tune Vehicle - Advanced Mode, and select the preset canned ECM tune to install.. then choose to Modify the ECM tune.. then adjust the tire height/diameter setting.. then exit back out, and then install/apply the tune..

that will re-install the tune with your tire size adjustment in it.

as long as it's within 1-3 mph of a GPS, you're fine and good to go.
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