In Reply to: Re: O E M v. O.E. posted by Lee on October 17, 2001 at 14:09:03:
BMW rotors are made in Spain at a 'captive' foundry. They are not ATE, Balo, Brembo or Zimmerman. They are spin-balanced as you say.
As someone stated OEM is Original Equipment Manufacturer. That's different from OE or Original Equipment. Difference? Maybe. First, OE is only sold through authorized BMW dealers. OEM is what everybody else can get. OEM means you buy the part made from the same company that made the OE part. But there can be a difference. For example, brake rotors. Several companies make OE rotors for BMW - i.e., Ate, Balo & others. However, after BMW purchases the rotors from these sources, supposedly they then "spin balance" the rotors. Result - you may may not notice the difference, but supposedly OE rotors are more "true". One major difference between OE and OEM parts is the warranty. BMW offers a one year, unlimited mileage warranty on all OE parts. I don't believe OEM parts have any warranty - probably up to your parts store. For more info on E34, go to Bruno's website, probably the best resource for these cars.