Gear Ratios

Differential fluid should be changed every 30,000 miles. Purchasing Redline 75W-90 Synthetic Gear Oil is recommended.

Model Platform Type Transmission
1
2
3
4
5
6
reverse
final drive
redline
323i E46 Sedan manual
4.23
2.52
1.66
1.22
1.00
–
4.04
3.07
6500
323ci E46 Coupe manual
4.23
2.52
1.66
1.22
1.00
–
4.04
3.07
6500
323cic E46 Convertible manual
4.23
2.52
1.66
1.22
1.00
–
4.04
3.46
6500
323iT E46 Wagon manual
4.23
2.52
1.66
1.22
1.00
–
4.04
3.46
6500
328i E46 Sedan manual
4.21
2.49
1.66
1.24
1.00
–
3.85
2.93
6500
328ci E46 Coupe manual
4.21
2.49
1.66
1.24
1.00
–
3.85
2.93
6500
325i E46 Sedan manual
4.23
2.52
1.66
1.22
1.00
–
4.04
3.15
6500
325ci E46 Coupe manual
4.23
2.52
1.66
1.22
1.00
–
4.04
3.15
6500
325cic E46 Convertible manual
4.23
2.52
1.66
1.22
1.00
–
4.04
3.46
6500
325iT E46 Wagon manual
4.23
2.52
1.66
1.22
1.00
–
4.04
3.46
6500
325xi E46 Sedan AWD manual
4.21
2.49
1.66
1.24
1.00
–
3.85
3.23
6500
325xiT E46 Wagon AWD manual
4.21
2.49
1.66
1.24
1.00
–
3.85
3.23
6500
330i E46 Sedan manual
4.21
2.49
1.66
1.24
1.00
–
3.85
2.93
6500
330ci E46 Coupe manual
4.21
2.49
1.66
1.24
1.00
–
3.85
2.93
6500
330cic E46 Convertible manual
4.21
2.49
1.66
1.24
1.00
–
3.85
3.07
6500
330xi E46 Sedan AWD manual
4.21
2.49
1.66
1.24
1.00
–
3.85
3.07
6500
330i 6spd E46 Sedan manual
4.35
2.5
1.66
1.23
1.00
0.85
3.93
2.93
6500
330ci 6spd E46 Coupe manual
4.35
2.5
1.66
1.23
1.00
0.85
3.93
2.93
6500
330cic 6spd E46 Convertible manual
4.35
2.5
1.66
1.23
1.00
0.85
3.93
3.07
6500
330xi 6spd E46 Sedan AWD manual
4.35
2.5
1.66
1.23
1.00
0.85
3.93
3.07
6500
330i ZHP E46 Sedan manual
4.35
2.5
1.66
1.23
1.00
0.85
3.93
3.07
6800
330ci ZHP E46 Coupe manual
4.35
2.5
1.66
1.23
1.00
0.85
3.93
3.07
6800
330cic ZHP E46 Convertible manual
4.35
2.5
1.66
1.23
1.00
0.85
3.93
3.07
6800
M3 Coupe E46 Coupe manual
4.23
2.53
1.67
1.23
1.00
0.83
3.75
3.62
8000
M3 Convertible E46 Convertible manual
4.23
2.53
1.67
1.23
1.00
0.83
3.75
3.62
8000
323i E46 Sedan automatic
3.67
2.00
1.41
1.00
0.74
–
4.1
3.46
6500
323ci E46 Coupe automatic
3.67
2.00
1.41
1.00
0.74
–
4.1
3.46
6500
323cic E46 Convertible automatic
3.67
2.00
1.41
1.00
0.74
–
4.1
3.46
6500
323iT E46 Wagon automatic
3.67
2.00
1.41
1.00
0.74
–
4.1
3.46
6500
328i E46 Sedan automatic
3.67
2.00
1.41
1.00
0.74
–
4.1
3.46
6500
328ci E46 Coupe automatic
3.67
2.00
1.41
1.00
0.74
–
4.1
3.46
6500
325i E46 Sedan automatic
3.67
2.00
1.41
1.00
0.74
–
4.1
3.46
6500
325ci E46 Coupe automatic
3.67
2.00
1.41
1.00
0.74
–
4.1
3.46
6500
325cic E46 Convertible automatic
3.67
2.00
1.41
1.00
0.74
–
4.1
3.46
6500
325iT E46 Wagon automatic
3.67
2.00
1.41
1.00
0.74
–
4.1
3.46
6500
325xi E46 Sedan AWD automatic
3.67
2.00
1.41
1.00
0.74
–
4.1
3.46
6500
325xiT E46 Wagon AWD automatic
3.67
2.00
1.41
1.00
0.74
–
4.1
3.46
6500
330i E46 Sedan automatic
3.67
2.00
1.41
1.00
0.74
–
4.1
3.38
6500
330ci E46 Coupe automatic
3.67
2.00
1.41
1.00
0.74
–
4.1
3.38
6500
330cic E46 Convertible automatic
3.67
2.00
1.41
1.00
0.74
–
4.1
3.38
6500
330xi E46 Sedan AWD automatic
3.67
2.00
1.41
1.00
0.74
–
4.1
3.38
6500
330i ZHP E46 Sedan automatic
3.67
2.00
1.41
1.00
0.74
–
4.1
3.64
6800
330ci ZHP E46 Coupe automatic
3.67
2.00
1.41
1.00
0.74
–
4.1
3.64
6800
330cic ZHP E46 Convertible automatic
3.67
2.00
1.41
1.00
0.74
–
4.1
3.64
6800