When a stock quad-turbo six-cylinder engine is not enough, tuners can quench your thirst for even more power.
- BMW M550d xDrive Has The World's Strongest Six-Cylinder Diesel
- How Much Quicker Is The New BMW M550d Compared To The Old One?
Save for the 1980s-inspired body graphics and the custom wheels, this appears to be a pretty ordinary BMW M550d xDrive, right? Looks can be deceiving as the diesel-fuelled midsize luxury saloon has been turned into an absolute monster with more power than you could ever need from a vehicle in this class. Equipped as standard with the strongest six-cylinder diesel engine in the automotive area as per BMW’s statement, the ultimate 5 Series diesel is already insanely powerful considering it packs 394 bhp and a massive 560 pound-feet.
The aftermarket specialists at mcchip-dkr want to prove to the tuning scene there’s always room for improvement even when dealing with an already high-powered BMW. Case in point, owners of the M550d xDrive can pay €1,399 (£1,222 using current exchange rate) for a stage one kit increasing output of the quad-turbo six-cylinder engine to 464 bhp and 627 lb-ft of torque. The upgrade package unlocks a top speed of 180 mph, which is already a lot more than the electronically governed 155 mph of the standard car.
Should you desire even more, the M550d xDrive with the stage two kit offers 508 bhp and a mountain-moving 638 lb-ft. It’ll set you back €1,679 (£1,470) and is going to enable the diesel rocket reach a top speed of 183 mph.
Those wheels we’ve mentioned earlier are a 20-inch set from mbDESIGN and come with Continental ContiSportContact tyres measuring 255/35 R20 at the front axle and 285/30 R20 for the rear. The new shoes are complemented by a KW coilover suspension system making the M550d xDrive look a bit more aggressive without overdoing it.