Quote:
Originally Posted by Blown353
Bob, a 275/40/17 tire is 25.7" diameter when new; so with your 3.73 rear gears and a .63:1 OD ratio (and also assuming there is no slip anywhere, and there shouldn't be with a stick) your RPM/MPH is as follows:
RPM / Speed
7000 RPM 228 MPH
6500 RPM 212 MPH
6000 RPM 195 MPH
5500 RPM 179 MPH
5000 RPM 163 MPH
4500 RPM 146 MPH
4000 RPM 130 MPH
3500 RPM 114 MPH
3000 RPM 97 MPH
2500 RPM 81 MPH
2000 RPM 65 MPH
1500 RPM 49 MPH
1000 RPM 33 MPH
So your 3000 rpm @ 100 mph observation is very close, but at 2K rpm you're going 65.
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I look forward to hitting 7000rpm in 5th gear.
