I have a 2001 325i sedan with 145,000 miles. To date has been bullet proof (although I did the Mango cooling system upgrade 2.5 years ago). Still drives like a young car, burns no oil--or no more oil than BMW's typically do--and is a pleasure to drive. Lately, I hear a 'tick-tick-tick' sound from the front end at low speed turns or U-turns. If it were a front wheel drive car, I would suspect half shaft/CV joint wear. That's what it sounds like. Any ideas? Thanks for any help anyone might offer.