This is the ultimate "dealbreaker." On M models, the trunk floor and subframe mounting points are prone to cracking under the engine's torque. Inspect the trunk floor carefully for popped spot welds or separation.
The driving experience is best described as an "M3-powered go-kart". Because of its extremely short wheelbase and old-school semi-trailing arm rear suspension (inherited from the E30), the car is incredibly agile but can be unforgiving if you're not smooth with the throttle. bmw m roadster buyer's guide
“Unlike the easy-to-drive and friendly Miata, the M Roadster is quick to bite back. It asks the driver to be smooth and capable — and if you aren't, the rear end is happy to abruptly step out.” Autoblog · 4 years ago Buyer's Verdict This is the ultimate "dealbreaker
“A midget weight lifter who also wrestles and runs races... This is a bargain in the used sports car market, and will bring a smile to your face every time you drive it.” Edmunds Because of its extremely short wheelbase and old-school
While the mechanicals are largely robust "parts bin" components from other BMWs, there are critical areas to inspect:
If you can find a specimen with a reinforced subframe and a documented service history, the M Roadster is a high-value entry into classic M ownership. It’s not as refined as a Porsche Boxster, but it’s significantly more charismatic. 1999 BMW Z3 M Roadster - POV Ownership Review
Like most 90s BMWs, the plastic radiators and water pumps tend to fail around the 100k-mile mark. Metal upgrades are highly recommended.