Two problems related to seat belt have been reported for the 1997 BMW Z3. The most recently reported issues are listed below.
My 1997 BMW Z3 had the airbag light come on 2 years ago. The technician said it was caused by the seatbelt tensioner. He replaced it and all was fine. It's back on again. If this is as common to these models as I've heard why hasn't BMW had a recall to fix the problem. This is getting expensive.
The driver and passenger seat belt lock periodically. Yh.