Quote:
Originally Posted by SteveBooth
DaveP, being off 2mph is not a big deal. Thats 20 miles off at the end of a 10 hour day of driving.
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Yeah, that's only
4000 miles (or more) off per year. No biggie, especially if you are basing your maintenance, costs, "IFTA, etc. off your mileage. :roll:
Quote:
Chances are, your speedometer is the one that's off and not the odometer that records the total mileage. I know my speedometer doesn't always show the correct speed but I know the odometer is right on. I've done the calculations while driving using a timed mile at 60 mph and also with my GPS.
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The speedometer and odometer are tied together. It takes a helluva lot more than "a timed mile" to show a fraction of a mile. I seriously doubt you are capable of seeing a 4% variance
per mile with your naked eye. And we all know you don't keep track of miles, so by the time it would show up, you wouldn't be noticing it anyway. :roll: