Re: 4.10 gears...not what I expected.
I thought I'd keep this in a different post but you should be able to calculate your actual tire diameter using a formula also OR maybe just use it to confirm your measurements. Tach would need to be very accurate.
MPH X gear ratio X 336 / RPM
In the above 60 MPH X 3.45 X 336 / 2960 = 25.4 (a match to what I measured years ago) and Dominic's 60 X 3.73 X 336 / 2864 = 26.25 (what Dominic mentioned measuring)
Clint, you could use this formula with your tires already mounted and measure to confirm.
Cliff - I'm guessing my numbers maybe passed your test.
Last edited by WVZR-1; 08-02-2014 at 11:21 PM.
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