Does going from stock Camaro SS with E92 245/275 tyre combo to 1LE 285/305 combo have any other changes to be done than speedo calibration, as new combo is bit smaller and also slightly mismached in high. Stock setting speedo read 2% too much against GPS now about 5%. Do I calibrate something in T43 too.
This is 2018 manufactured Euro spec car. I have managed to read calibration.