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> Speedo is off 5mh faster (Not sure why), After switching from 14 to 15
post Jul 18, 2014 - 2:56 PM
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msk59



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After I purchased the car the first mod was to get rid of 14 inch steel rims. I purchased 2001 model 15 inch and installed 195/55/R15 Goodyear Kelly sports on them. I checked my speed the other day with GPS and I noticed it is 5 miles OFF at 80 mph. The car show that I am driving 80mph while the GPS shows exactly 75. I am surprised because, the door sticker states that I can either use either 14 inch with ***/70/R14 or upto 205/55/R15.

Is there some correction somewhere I need to do? Just curius.

Thanks

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