Are these Speedo vs GPS results normal?
So I borrowed a buddies handheld GPS to test my speedo and got some results I wasn't expecting.
At low speeds like 15 MPH actual speed was a touch lower by 1.5 mph
At medium speeds 40 MPH Actual speed was bang on.
At higher speeds 60 MPH actual speed was touch higher 1.5 MPH
I was wondering if this is correct or if I made a mistake?
I have tires which are oversized 30.5"
Also does the speedometer and odometer receive the same data or are they different somehow?
2000 Lmt. V8 Quadradrive, 2" BDS, Bilsteins, JKS Tr Bar, Addco Rear Sway