Yes, but just a bit. A car measures the rotations of the axle and wheel. The speed is the distance traveled per hour (speedometer reading). The distance traveled (odometer reading) is rotations ...

Yes, it does! Though not as much as speedometer fudging by your car manufacturer. Your car can only measure rotations of the axle, with expectations of tyre circumference based on its standard tyres.

Modern road-vehicle tyres are made of extremely tough synthetic rubber and have steel wire and mesh reinforcement embedded within them, so they are far less elastic than, say, the tyres on my ...