Article by: M. Oswald
Models: All BMWs specified in the table below.
Below is a table of differential gear ratios offered in various BMW models:
| Body Style & Year Range | Manual Transmission | Automatic Transmission | Notes |
| E23 1977 - 1986 | 735i - 3.46, 3.25 | ||
| E24 1976 - 1989 | Pre '88 635csi - L6 ,3.46 M6, 3.91 | 635csi - '88-'89 - 3.64, 3.91 | |
| E28 1981 - 1988 | 528e, 3.25 535i/is, 3.25 M5, 3.91 | 528e, 2.93 | |
| E30 1984 - 1993 | 318i/is (M42) - 4.10 318ic (M42) - 4.27 325e before 9/85 - 2.79 325e/es - 2.93 325i/is/ic - 3.73 325ix - 3.91 M3 - 4.10, 3.15*, 3.25* | 325i/is/ic - 4.10 325ix - 4.10 | *Factory options |
| E31 1990 - 1999 | 850 - 2.65 | 850 - 3.64 | |
| E32 1986 - 1994 | 735i/il - 3.64 740i/il - 2.93 750i/il - 3.15, 3.64 | 735i/il - 3.91, 4.27 | |
| E34 1987 - 1996 | 525i (M20) - 3.73, 3.75 525i (M50) - 3.23 525it - 4.10 530i - 3.07 530it - 3.23 535i - 3.46 M5 - 3.91*, 3.73* | 525i (M20) - 4.10 525i (M50) - 4.10 525it - 4.10 530i - 3.15 530it - 3.23 535i - 3.91, 4.27 540i - 2.93 | *Factory options |
| E36 1990 - 2000 | 325i/is - 3.15 318i/is - 3.45 325ic - 3.15 | 325i/is - 3.19 318i/is - 4.45 325ic - 3.64 | |
| E46 1997 - 2006 | 323 all models - 3.07 325i/ci - 3.15 325xi - 3.23* 330i/ci/xi - 3.07 330 zhp - 3.07 | 323 all models - 3.46 325i/ci - 3.46 325xi - 3.46 330i/ci/xi - 3.38 Z4 2.5 - 3.64* | *Factory options |