Mechanic is charging $440 to replace front right wheel speed sensor
 

Is that a reasonable price?! :cry: I have a 2001 model, if that means anything

Indy or dealer? Did he give you a break out on parts and labor?

Indy, and no he did not. Agh, I should have asked.

Huh, speed sensor? Never heard of it. If you can find out what part it is check the price on http://www.realoem.com/bmw/select.do?vin=XXXXXXX (substitute the last 7 of your VIN for XXXXXXX in the link)

Go to ECStuning.com and buy the sensor ,Jack up the car and support it with jack stand ,,,,,,and about an hour later waola you done, and save your self $ 300 that should be enough to buy you tons of beer ...

http://www.flickr.com/photos/mrbmwx5...n/photostream/
http://www.flickr.com/photos/mrbmwx5...n/photostream/
http://www.flickr.com/photos/mrbmwx5...n/photostream/

You 'can' test them, by the way.
- How to test the BMW wheel speed sensors with a DMM (1)

Here are my results, for example, from a few years ago:
http://www.bimmerfest.com/forums/att...1&d=1243235577

Or you can connect a laptop with INPA on it and see which wheel is not sending data back to the ECU.