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Recalibrating speedometer?

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Old 11-30-2017, 01:22 PM
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Recalibrating speedometer?
Is there a way to recalibrate the speedometer? My GPS shows me going 75 while the speedo shows 79
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Old 11-30-2017, 01:25 PM
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what tire sizes are you using?
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Old 11-30-2017, 01:32 PM
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79 versus 75 is a big difference. Recheck your data.
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Old 11-30-2017, 02:05 PM
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The dealer I bought the car a few years ago from had on 23/55r17 so the speed was off by 1mph and I got new Michelin Pilot Sports AS3+ the other day. They only had 245/45r17 so that's what I went with. A little shorter than the 50 from OEM spec
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