lol yeah i was just talking about the general automotive garmins and tom toms. I guess the higher end ones would help. He's still stuck with the inconsistency at the pump though.

I usually use my GPS to dial in my tire size so my computer is accurate. If i'm within 1mph of what my GPS says on a flat highway at 70 mph, i know i'm good to go. Then it doesn't get much more accurate than that.