2006 BMW Z4 Convertible 3.0si 2dr Convertible (3.0L 6cyl 6M)
It has the expensive staggered run-flat tires. No rotating for even wear. Bridgestone now makes less expensive run-flats that actually have a mileage warranty. It was a big mistake not to buy extended warranty. Too many repairs that I wouldn't have expected from a BMW. Window actuator, a/c, starter, power top (3rd time failure). The hydraulic motor sits in a well where water drains and according to some forums the drain clogs, consequently causing damage to the hydraulic motors.