ZL1 diff swap and speedo calibration in HP Tuners - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com
Update Tire Size using HP Tuners | This Tech Tuesday video will show you how to upload and download a tune file as well as changing tire size using HP Tuners
![Speedo error calculator – speedometer error as a result of tyre size change – Speedometer calibration Speedo error calculator – speedometer error as a result of tyre size change – Speedometer calibration](https://www.tyresizecalculator.com/images/articles/speedo-error-calculator.gif)