Recent content by gawettla

You could be right about the GPS. I am not an expert in GPS or speedometers for that matter, but I don't think bad satelite coverage would show as consistent lower than actual speeds. Would it not show up as inconsistent speed readings. There must be some others with GPS's that might provide...

I just got a gps and have discovered that when running my stock 235/70/16 tires, my speedometer reads about 3% high. When it says I am going 50, I am really only going 48.5. This makes my gas mileage even worse. My EVIC already reads about 7% higher MPG than I really get. So taking the...