Ford Performance Calibration tire size question.

[JaysOnTheEDGE]

I'm running the FPP tune with a different tire size value them what was oem. Does anyone know if I flash it back to stock will the tire size value revert back to the stock value?

I ask because when I changed the tire size in the pro cal unit after flashing the tune it didn't rewrite all 95 blocks I'm guessing it writes to a different part of the software ?

thanks in advance for any input.

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[9zero1790]

i am fairly certain if you go back to stock tune it will change everything back to stock including tire size . i changed my tire size without doing the full flash, just entered the new revs per mile and it did the adjustments and finished several minutes faster than the full tune install so i assume some settings are stored etc.