The speedometer thing is really overblown for the type of changes that people are making here if not being radical with 22 inch wheels, slicks etc. For example, the stock RS 20 inch tire is a 245, going to a 275, means
when your speedometer is reading 65, you’re actually going 64.7. Not enough to worry about ....do your calculations here:
https://www.discounttiredirect.com/l...xoC1KsQAvD_BwE