German tuning company G-Power claims to have used the BMW M5 to achieve the World's Fastest Sedan record. The G-Power Hurricane RR manages a top speed of 372 km/h (231 mph), roughly the same top speed as the McLaren F1.
The car beats the tuner's previous record, set by the M5 Hurricane RS. That car used a 750-hp (551-kW) twin-supercharged V10 engine to hit a top speed of 367.4 km/h (228 mph).
However, the new model gets a 6.67-percent boost in power, bringing the horsepower output to 800 (588 kW). The car's engine cranks out 800 Nm (590 lb-ft) of torque, allowing it to spring to 100 km/h (62 mph) in 4.35 seconds, and to 200 km/h (124 mph) in 9.5 seconds. The car eventually gets to 300 km/h (186 mph) in 25.8 seconds, on its way to its record-setting top speed.
Larger superchargers were used with the engine to achieve 25-percent more space for the air volume. Instead of the 20-inch wheels that were initially installed on the €252,100 car, engineers decided to use 19-inch wheels for the speed run. The wheels were wrapped in Michelin Pilot Sport Tires.
Sadly for G-Power, it appears that this record could be short lived. The Bugatti 16C Galibier is on the way, with the same 8.0-liter 16-cylinder engine as the Veyron, but using superchargers instead of turbochargers. The Galibier should hit the market as a 2013 model year sedan.