Moonroof won’t be on options list for the 2012 BMW 1 Series M coupe

Article by Christian Andrei, on December 30, 2010

BMW’s 1 Series M Coupe will be offered with numerous options but one thing that it will not have is a moonroof. This is because a moonroof would add 35 pounds (15.8 kilograms) to the overall weight of the car. Without a moonroof, the car will have a lower center of gravity, according to DriveOn.

Serving as the core of the new BMW 1-Series M Coupe is a high-revving inline-6 engine that provides a free-revving behavior and remarkable dynamic performance. The inline-6 has been considered as one of the classic engine formats. In fact, the second and third generations of BMW M3 offered the inline-6 engine, which has been able to deliver high output, quick response and booming sounds.

As for the BMW 1-Series M Coupe, it is equipped with the latest version of the powerplant – a twin-turbocharged, all-aluminum, 3.0-liter inline-6 engine that still possess the attributes of its predecessors. Thanks to the twin low-mass turbochargers and BMW's High Precision direct injection technology, the inline-6 engine could generate an output that could only matched by naturally aspirated engines with a larger displacement and more cylinders.

The inline-6 engine in the new BMW 1-Series M features a turbocharger system that could maintain a high output across the entire engine speed range. It allows the engine to develop a max output of 335 hp (250 kW) at 5,900 rpm and nominal peak torque of 332 lb-ft (450 Nm) available between from 1,500 rpm and 4,500 rpm.

Max revolution is pegged at 7,000 rpm. Furthermore, the new BMW 1-Series M Coupe comes with an improved engine management system that includes an electronically controlled overboost function that could increase, albeit briefly, torque under full load by 37 lb-ft (50 Nm).

This means that the peak torque surges to 369 lb-ft, allowing the BMW 1-Series M Coupe to accelerate from zero to 60 mph in just 4.7 seconds (0-100 kmh in 4.9 seconds) and sprint from nil to a quarter mile in 13.2 seconds.

It could reach an electronically limited top speed of 155 mph (250 kmh). To match the power of the engine, M tuned the exhaust system of the BMW 1-Series M Coupe to feature four signature exhaust pipes that give the vehicle a unique sound personality.

BMW 1-Series M Coupe has an M Drive button strategically mounted on the steering wheel. With one push of the M Drive Dutton, a driver could instantly activate a throttle response program for a sportiest driving experience. Sending power to the rear wheels of the BMW 1-Series M Coupe is a specially designed six-speed manual transmission that features dry sump cooling system for better interaction with high-torque engines.

Changing gears is much easier thanks to a very short M gearshift lever. The final drive ratio for the BMW 1-Series M Coupe is 3.15:1. Placed in between the engine and the transmission is an upgraded flywheel for high-torque applications.

Additionally, the BMW 1-Series M Coupe comes equipped with a variable M differential lock that generates lock-up torque on-demand and variably, thereby providing optimum rear-wheel drive traction whatever the road surface is.

This variable M differential lock functions by responding to changes in rotational speeds in the right and left rear wheel, then redirecting drive torque in less than a second.

Thus, even when there are differences in friction coefficients between the right and left rear wheel, the car is able to maintain optimum traction and optimal propulsion. When the BMW 1-Series M Coupe is traversing on slippery surfaces or accelerating out of corners, it could fully take advantage of its rear-wheel-drive attributes.

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