Inaccurate Speedometer - Saab 9-3SS Bulletin Board - Saabnet.com
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Got a Garmin at Thanksgiving and have noticed that, according to the speed the Garmin displays, the speedometer on my 2010 9-3 SS (58K miles, stock 16" wheels, and OEM-size tires) is inaccurate.
The speedometer will show 80 mph but the Garmin says only 77 mph (that probably accounts for the lack of speeding tickets). The Garmin speed display tracks dead on with the speedo on my 2006 9-3 SC, and dead on with the three rental cars I used over Xmas vacation on the East Coast.
Is this just a simple calibration issue? Was it calibrated incorrectly at the factory because they programed in the wrong wheel size? Easy fix?
Have no idea if this started when new or is a recent development.
->Posting last edited on Fri, 11 Jan 2013 09:30:10.
Posts in this Thread:
- Inaccurate Speedometer, EGD , Fri, 11 Jan 2013 09:28:32 <-- Viewing This Message
- Some comments, Stephen Goldberger, Sat, 12 Jan 2013 10:20:36
- My 2010 is exactly the same, vvack0matic , Fri, 11 Jan 2013 19:28:57
- Re: Inaccurate Speedometer, SWEDECAR , Fri, 11 Jan 2013 13:29:19
- Re: Inaccurate Speedometer, Curtis, Fri, 11 Jan 2013 10:30:44
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