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Just put on larger wheels and tires. Is there a way to calibrate the speedometer?

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Old 08-19-2011, 08:35 PM
tfrost tfrost is offline
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Question Just put on larger wheels and tires. Is there a way to calibrate the speedometer?

I went from 205/75 14 to 215/70 15.
Any calibration needed?

Thanks, T
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Old 08-19-2011, 09:18 PM
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The dealer can change your pinion factor in the transmission controller. If that size isn't on the list they can get you closer anyway.
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Old 08-20-2011, 06:24 PM
mfahey mfahey is offline
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Vehicle: 2001 Grand Caravan ES
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The rule of thumb I've always heard was that you could go one size wider if you went down a size in aspect ratio which is what you have done. I went from 215/65/17 to 225/60/17 on our 2001 and the speedometer was perfect when I checked it over a 10 miles stretch of interstate.
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