Tire Size

[BigSur]

Originally Posted by JackandJanet

I can't comment on your Tom Tom, because I don't have one. Mine's a Garmin hiking GPS and it measures both current speed and elapsed distance. I just sat it up on the dashboard and confirmed the speed. The position accuracy is within 10-16 feet (WAAS enabled) and the steady state velocity accuracy is 0.05 meters/sec which is about 0.1 MPH if I converted properly.

Regardless, I suspect your GPS measurement is pretty close too. When I apply the error to your TS figure: 22.8/23.3 X 2575 = 2520, which is VERY close to the original 2522 figure that you started out with, and which I still think is closer to the right value.

Honestly, I'd put in 2522 and call it good enough until you get some data that PROVES otherwise.

Edit: Guess I was slow in giving you an answer. Compare your Tom Tom's speed with the Gryphon's speed.

- Jack

Thanks and will do on the speed. The original TS of 2522 however proved to be too low according to the Camry, which we "suspect" to be accurate. I'm going to set at about 2550 and see what I get. I'm about to depart on a 180 mile journey as we speak. I'll let you know how it turns out. Thanks again.