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      10-26-2016, 06:30 PM   #1
Jetmart
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Drives: 2011 Z435is
Join Date: Dec 2015
Location: Windsor, Ontario

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My Speedo is off

I Found When I Am Driving Above Posted Speeds I Get Past A Lot More Than I Should. I Finally Brought Several Gps Units And Confirmed That The Car Over Reads My Speed By 5 Km/hr. I Think This Is Significant. I Wonder If The Odometer Over Reads As Well Racking Up Higher Milage Than I Shoud Be.
I Have Stock Tire Size And Rims On The Car. What Could Cause This?
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