Top Speed = R / T * C
R = RPM
T = Tranny ratio
C = Circumference of your tire
R = 7200 rpm (rotation per minute)
T = .755 (5th gear) * 4.105 (final gear) = 3.099
C = ((((195mm * .50) / 10 / 2.54) *2) + 16in) * pi = 74.346in = 6.200ft
You may wonder where these numbers are coming from
195mm is the width of the tire
.50 is the aspect ratio, which is the relationship between the tire's height and it's width
/ 10 is to convert from mm to cm
/ 2.54 is to convert from cm to in
* 2 for top and bottom of rim
16 is the size of the rim
the total Diameter of the tire is 23.677in
using the formula C = D pi
R / T = 2330.097 RPM (at the wheels) * 60 min = 139,805 RPH (at the wheels)
Top Speed = 139,805 RPH * 6.200ft = 866,791ft/hr = 164.165 mph
Your top speed with change with the size of your tires/wheels.