Power isn't the only characteristic of a sports car; handling is also mandatory. Engineers equip the 2006 M Roadster with staggered 18-inch wheels and low profile tires, adding the necessary meat to keep the M Roadster glued to the road. BMW opted against run-flat tires due to their added weight and because no run-flat tire designs met the M Roadster's requirements. Surprisingly, ride quality is livable for a car with this kind of handling capability but those used to a softer suspension will hate the Roadster's intimate connection with the road. Steering and brakes are quick and precise, both delivering results from input instantly. The roadster's brakes take some getting used to but feel as though they could pull down a runaway Peterbilt in a matter of seconds.