Position problem - since changing wheels.
 

I have recently changed my wheels from 19's to 20's and have started noticing navigation problems - don't know if the 2 are related??

Basically, the position of the vehicle on the sat nav screen is about 200 ahead of where the car really is - ie. I've driven past the side street a good few seconds before I reach it on the screen. Or the other way around --- can't remember!!

Is there any way of re-calibrating the sat nav / gyro etc??

Many thanks for your help, in anticipation....