Is this DC from the Z3 board. I sold my 98 MZ3 and a 00 540iT for an 01 X5 4.4 (wife) and an 01 M5. I only have 1550 on the speedometer, but have had no problems. Have a friend with about 10000 on an 00 M5, also with no problems. Have heard some complaining from those with split seats though.