Re: Speedometer tracks 5-7 mph over actual speed - Saab 900 Bulletin Board - Saabnet.com
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Re: Speedometer tracks 5-7 mph over actual speed
Posted by Craig [Email] (more from Craig) on Fri, 14 Jun 2002 13:27:39
In Reply to: Speedometer tracks 5-7 mph over actual speed, Frank Larkin, Fri, 14 Jun 2002 10:03:10
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Suprisingly, most cars come with optomistic speedometers. On a top speed run, they many cars read over 10mph above the actualy speed. My 9k was close to 4mph over at all highway speeds on 195/60-15, and I haven't measured it yet on the new 225/50-15s which should bring it closer to actual. The optomistic speed is reflected in the odometer. The other post is correct that you can install a device inline with the speedo cable. Look in the yellow pages under speedometers (IIRC) or call around. The'll put your car up on a set of rollers to measure the diference, it's actually pretty interesting.
Let us know how it goes.
Craig
posted by 63.107.13...
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