RPM = V / D x GR x 334.2
Where:
V = vehicle speed in mph
D = effective tire diameter
GR = gear ratio (e.g., for my truck, 4.10 rear x .70 overdrive = 2.87)
the above formula on the chevy truck sit does not seem to work out what am
i doing wrong
55 mph/ 27 inch tire is 2.03 2.03 x 4.10(gear ratio) x 334.2 equals 2781
which is supposed to be rpms at 55
if i was only turning 2800 at 55 i would be estatic i cant even get it to
55 without feeling like its gonna blow help??
thanks mike layton
50 3100
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