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Old 01-11-2013, 03:40 PM   #1419
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Join Date: Sep 2005
Chapter/Region: NWIC

Originally Posted by ANR62NV View Post

With these two tires sizes ^^ the difference on his speedo would be -2.3% ..... Or "slower" than actual speed of vehicle .... Or 1.38 mph @60mph
If the OP doesn't want much change he'd have to go with a 265-35-18 which would give a difference of -0.1%

Not significant .....
Actually a smaller diameter reads faster, not slower.

There is also a pretty distinct gearing advantage with a <25" diameter on the 5spd.
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