Tire size calibration Revs/Mile with Ford Performance Tune Tool

[e90steve]

I have an OBX that originally came with the 18" tire combo. I upgraded to factory 315/70/17 Sasquatch wheels and tires. After getting the Ford Performance Tune, I recalibrated the rolling tires to 587 revs/mile.

The result is about a 3mph discrepancy between the factory speedometer and GPS speedometer. It seems to be reading fast now on the factory display.

Anyone know what is the official recommended revs/mile setup for factory Sasquatch wheels/tires? 587 is not reading out correctly. I'm seeing possibly some saying 606 is what it is set from the factory?

Thanks!

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[Cavallo11]

Hello
Did you figure this out?
What is the number?

 

[dbattle]

I have an OBX that originally came with the 18" tire combo. I upgraded to factory 315/70/17 Sasquatch wheels and tires. After getting the Ford Performance Tune, I recalibrated the rolling tires to 587 revs/mile.

The result is about a 3mph discrepancy between the factory speedometer and GPS speedometer. It seems to be reading fast now on the factory display.

Anyone know what is the official recommended revs/mile setup for factory Sasquatch wheels/tires? 587 is not reading out correctly. I'm seeing possibly some saying 606 is what it is set from the factory?

Thanks!

Did you do any lift with this setup? How has the ride been for you?

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