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Old 12-09-2006, 03:45 PM   #1
ctouchet
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Location: Maurice,Louisiana
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need help on tire size

I have a 1982 GMC Step Side my speedometer is off. I have 275/60/15 tires on it. when im going 55 my speedometer is going about 65. anybody have any ideas on what i need to do?
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Old 12-09-2006, 05:06 PM   #2
Grande Rojo
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Re: need help on tire size

Change the spedometer gear in your tranny. Or just drive 10mph slower
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