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Old 08-03-2013, 10:22 AM   #8 (permalink)
Master EcoModder
Join Date: Aug 2010
Location: Philippines
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In the years I've been testing using a Racelogic V-Box GPS system, I've found most odometers to be witihin acceptable tolerances on standard tires... about 1-2%.

It's speedometers that are way off. Some over-reading by over 5 mph.

Pays to keep a GPS device in your car... or at least calibrate against a GPS device.
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