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Changing tire size question

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Jun 6, 2011 | 10:52 AM

#1

gafleeman

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Joined: May 2011

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Changing tire size question

Going from 275/65/18 to 275/70/18 does the speedometer have to be recalculated for the difference in size? My dealer said on the 2011 F-350 the parameters are within tolerance it doesn't need it.Anyone on here done this tire change?Thanks.

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Jun 6, 2011 | 01:07 PM

#2

89LX306

Fleet Mechanic

Joined: Jul 2003

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From: Houston

If you have a GPS check it before and after. When I went from stock 265/75/16 to 285/75/16 my speedo was dead on accurate according to my GPS.

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Jun 6, 2011 | 07:56 PM

#3

gafleeman

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Thanks for the info.with the 65's they match the speedo. Getting the tires swapped Sat. dealer had to order.

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