Smaller diameter and odo read

2m3 · 07-17-2019, 06:17 PM

Is it correct that using smaller tire diameter than stock size tire will make odometer read higher than actual distance covered?

Stock rear tire comp package is 20/285/30: 754 revolution for each mile

Replace with tire size 18/305/35: 764 revolution for each mile

How the f80/f82/f83 odo read based on?

gatorfast · 07-17-2019, 06:54 PM

You are talking an approx 1% difference in revolutions per mile. The variance will be de minimis.

2m3 · 07-17-2019, 07:21 PM

Quote:

Originally Posted by gatorfast

You are talking an approx 1% difference in revolutions per mile. The variance will be de minimis.

Thank you for your respond. I just want make sure the difference is minimum, and my calculation is correct.

Actually Iam trying to calculate the difference in odo read for a 3-year lease with 30k miles allocation

07-17-2019, 06:17 PM	#1
2m3 Private First Class 11 Rep 146 Posts Drives: 1995 M3, 1988 M3 Join Date: Apr 2006 Location: HIllside VIllage, ca 90032 iTrader: (1)	Is it correct that using smaller tire diameter than stock size tire will make odometer read higher than actual distance covered? Stock rear tire comp package is 20/285/30: 754 revolution for each mile Replace with tire size 18/305/35: 764 revolution for each mile How the f80/f82/f83 odo read based on?
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07-17-2019, 06:54 PM	#2
gatorfast Major General 4995 Rep 6,862 Posts Drives: 718 Cayman Join Date: Jan 2008 Location: SoFla iTrader: (4)	You are talking an approx 1% difference in revolutions per mile. The variance will be de minimis.
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