# Model information

### Vehicle Identification Number breakdown:

First 3 letters - Manufacturers code. WBA = BMW AG, WBS = BMW Motorsport GmbH
Next 4 digits - Model type
Next digit - Restraint system, 0 = Seat belts, 1 = SRS
Next digit - Check digit determined by VIN

Next letter - Model year
B | 1981 | H | 1987
C | 1982 | J | 1988
D | 1983 | K | 1989
E | 1984 | L | 1990
F | 1985 | M | 1991
G | 1986 | N | 1992

Next letter - plant code. A = Munich, B or D = Dingolfing, E = Regensburg

Last 7 digits - Sequential serial number, consisting of 7 numbers until Jan 1 1989. After that date, the first 2 digits of the 7 where changed to letters, e.g. DH10443

### 1988 model changes:

Engine : Revised ETA motor (2.7 Liter) has power increased to 127 bhp at 4,800 rpm, as opposed to 121 hp at 4,250 rpm

Fuel Supply : Fuel tank capacity increased to 16.4 gallons/62 Liters as opposed to 14.5 gallons / 55 Liters. (Except M3)

Suspension : Aluminum front suspension control arms for M3.

Body :

| New design bumpers with less overhang, 20mm front and rear, except convertible and M3.
| Ellipsoid low beam headlights.
| Restyled and slightly larger tail light clusters, except convertible and M3.
| New style high mount brake light for convertible.
| Complete front section of body shell assembly redesigned for easier repair.
| Blacked out windshield , rear window and side window frames, except convertible.

### 1989 Model changes:

| Plastic, painted bumper covers.

### Dimensions:

##### Dimension

##### Unit

##### 325

##### 325i

##### 325iS

##### 325iX

##### 325iC

##### M3

##### Length

mm

4450

4450

4450

4450

4450

4345

##### Width

mm

1646

1646

1646

1661

1646

1680

##### Height (unloaded)

mm

1379

1379

1379

1400

1370

1370

##### Wheel base

mm

2570

2570

2570

2570

2570

2558

##### Front overhang

mm

825

825

825

845

845

793

##### Rear overhang

mm

1054

1054

1054

1074

1074

990

##### Front track

mm

1407

1407

1407

1420

1407

1412

##### Rear track

mm

1415

1415

1415

1415

1415

1424

##### Min turning circle (wheels)

m

9.8

9.8

9.8

10.3

9.8

10.3

##### Min turning circle (overall)

m

10.5

10.5

10.5

11.1

10.5

--

### Gear Ratios, all ratios :1

##### Manual

##### ZF

##### Getrag

##### M3

##### First

3.84

3.83

3.82

##### Second

2.20

2.20

2.20

##### Third

1.39

1.40

1.40

##### Fourth

1.00

1.00

1.00

##### Fifth

0.81

0.81

0.81

##### Reverse

3.46

3.46

3.71

#### Automatic

First

2.48

| Second | 1.48
| Third | 1.00
| Fourth | 0.73
| Reverse | 2.09

##### Final drives

##### 1984

##### 1985

##### 1986

##### 1987

##### 1988

##### 1989

##### 1990

##### 1991

##### 1992

##### 1993

##### 318i M10

##### 318i/is M42

4.10 (M)

##### 318iC M42

4.27 (M)

4.27(M)

##### 325

2.93

2.93

##### 325e/eS

2.93

##### 325i/is/iC

3.73

3.73

3.73(M)
4.10(A)

3.73(M)
4.10(A)

3.73(M)
4.10(A)

3.73(M)
4.10(A)

3.73(M)

##### 325iX

3.91

3.91(M)
4.10(A)

3.91(M)
4.10(A)

3.91(M)
4.10(A)

##### M3

4.10

4.10

4.10

4.10

E30 M3 Repair Manual V2.7. Copyright ©1999-2001 Koala Motorsport & Brett Anderson