Update to new tire size for improved fit and performance
Correct speedometer reading for accurate vehicle data
Optional gear ratio adjustment if needed
Remote service process for convenience
Includes ECU/TCM programming assistance for modern vehicles
Summarized by Shop
This service allows existing customers to update their current tunes to accommodate a new tire size and correct speedometer reading. Please measure in (inches) from the pavement to the top of the tire and submit your update request. Any gear ratio changes are also included if necessary with this service.
Service Type
Remote tire size update
Input
Measured tire size in inches (pavement to top of tire)