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      09-25-2020, 05:40 AM   #81
Papa Popov
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Drives: 2009 128i 6MT
Join Date: Mar 2020
Location: SoCal

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Quote:
Originally Posted by Ric in RVA View Post
Still haven't found time to do mine. But I did find some online info and make up a simple table of speed in gears.

3.23

Oem tire
Tire Width (mm):205
Tire Aspect Ratio:50
Wheel Size (inches):17
Diameter: 25.1"

Engine Redline RPM:
7000


1st Gear: 4.32. 37.4 MPH
2nd Gear: 2.46. 65.7 MPH
3rd Gear: 1.660 97.4 MPH
4th Gear: 1.230 131.4 MPH
5th Gear: 1.000 161.6 MPH
6th Gear: 0.850 190.2 MPH
Final: 3.230 (Getrag)

Cruising Speed (MPH): 80
Cruising RPM: 2945 RPM


3.73

3.73 3.23

1st Gear: 32.4 MPH. vs stock 37.34
2nd Gear: 56.9 MPH. vs stock 65.7
3rd Gear: 84.3 MPH. vs stock 97.4
4th Gear: 113.8 MPH vs stock 131.4
5th Gear: 140.0 MP. . vs stock 161.6
6th Gear: 164.7 MPH vs stock 190.2
Final:
3.730 (Getrag)

Cruising Speed (MPH): 80
Cruising RPM: 3401 RPM
3400 @ 80mph, big oof. Would love to do this swap, but unfortunately everyone on I-85S drives like a bat outta hell. Cruising @ 85mph sounds like an MPG nightmare with that ratio. Toss the a muffler delete into the equation and that does not sound like a good time...
Appreciate 1
Ric in RVA1468.50