Discussion Starter · #1 ·
After I installed my GPS and went on a ride (yes I actually made it back home)I noticed that there is a 4 MPH difference between my GPS and my speedometer. The GPS shows 51 MPH and the speedometer showing 55 MPH. 4 MPH seems like a pretty big difference to me. Anyone else have this issue? Tires are Michelin and not over or undersized.