Check the chassis number.
That will tell you if it is a true 'M' Series or not.
WBA - is BMW-AG, munich
WBS - is BMW Motorsport Gmbh, Munich
Next four digits are the model, so should be something like - BB13 - not totally sure on that one.
If it is a genuine 'M' series may have different coding.
Then there is a couple more numbers for type of restraints fitted etc, then a letter. This letter tells you the year of the vehicle, therefore a 1989 should have the letter 'K'
Then the next letter tells you the plant it came out of -
a - Munich
B,D - Dinofing
E,F - Regensburg
This is only three there are others.
The last six letters/digits are the serial number of the car.
Hope this helps
Rossco
1996 E36 320i
