BMW’s M division is celebrating its 50th anniversary in style with the radical M4 CSL, the fastest sports car in the history of the German marque.
Limited to 1,000 units, it is lighter and more powerful than the BMW M4 Competition, the ground connections also being much more efficient and powerful.
The basis, however, is this almost demonic version in itself, but its development is completely different making it a completely new car.
The official presentation takes place this weekend at the Villa d’Este elegance competition in Italy.
Fastest at the Nurburgring
As the acronym CLS (Competition Sport Lightweight) indicates, this variant weighs 100 kilograms less than the 1,800 kilogram model from which it descends, thanks to the abuse of carbon fiber in its construction.
What it loses in weight gains in power: 40 hp more, which brings it to 550 hp at 6,250 rpm.
This increase obtained with the increase in the pressure generated by the turbos from 1.7 to 2.1 bar translates into a ratio of 2.95 kg/hp between weight and power.
The maximum torque remains at 650 Nm but in a wider rev range, between 2,750 and 5,950 rpm.
Power is transmitted to the rear wheels only via an automatic transmission. Steptronics eight-speed with torque converter.
Shift times have been shortened to be as quick as a dual-clutch transmission.
On the track, he has already shown how fast he is, with BMW clocking him in the “green hell” of the Nürburgring in 7:15.677 minutes on the short version of the 20.6 kilometer circuit.
In the longest configuration, with 20.832 kilometres, the time achieved was 7:20.207 minutes, which means that it is the fastest model of the German insignia ever on this track.
If in doubt, note that zero to 100 km/h is accomplished in 3.7 seconds (two tenths less than the M4 Competition) for a top speed of 307 km/h.
Of course, for these performances, it was necessary to increase the rigidity of the chassis, the engine and gearbox mounts being firmer.
The suspension supported by electronically controlled dampers has new settings that allow the ground clearance to be lowered by up to 8 mm compared to the M4 Competition.
Front wheel camber was also increased and stability was provided by larger diameter bars.
On dry roads, levels 1 to 5 of the M traction control allow controlled skidding, while levels 6 to 10 rely on the system developed for touring drivers.
They are adjustable for wet or dry conditions, as well as tire temperature, to maximize traction and directional stability.
drastic weight loss
In the genesis of the weight reduction of the BMW M4 CLS was the almost “uncontrolled” use of carbon fiber in the structure.
The exclusive painting in Frozen Brooklyn Grey does not hide some of the points where this material was used, such as the hood and the tailgate, not to mention the roof that the M4 Competition already had.
You can also opt for metallic tones. Alpine White or black sapphirewith the brand symbol in black to celebrate the 50th anniversary of the M division, with red and blue details highlighting the letters.
Ultra-thin carbon seats, which have to be custom-tuned at the dealership, saved 24 kilos.
The removal of the rear bench seat, replaced by a hollow cover to store two helmets, removed an additional 21 kilos, to which are added an additional 15 kilos by removing the insulation and soundproofing materials.
The titanium exhaust muffler saved 4.3 kilos, and the single-zone climate control and the most basic standard audio system offered in the M4 range saved an additional 11 kilos.
Specific shock absorbers, 19-inch front and 20-inch light-alloy wheels and carbon-ceramic brakes shed an additional 21 kilograms.
The huge grille, which exposes the mechanics in all its splendor, also contributes to this slimming cure.
Bordered in red, we find the same color on the edges of the hood, the roof, divulge front and side skirts, with LED rear lights incorporating optional laser illumination for the first time.
And, as in the M8 Gran Coupé First Edition, BMW offers yellow daytime running lights that evoke the world of competition.
The interior is enhanced by the two screens with the system BMW Live Cockpit Professionalwith instrumentation at 12.3 inches and infotainment at 10.25 inches.
This screen is where the system menus are displayed. M Drive Professionalcom Drift Analyzer M and M Stopwatchthe display being optional head held high on the windshield.
To these devices is added the button M-Mode to select driving modes Road, sport and Track.
The seats are covered in leather Merinoand the steering wheel covered with Alcantarathe decorative moldings being in carbon fibre.
Using two buttons on the steering wheel, it is possible to memorize two system settings that affect the dynamics of the M4 CLS.
The seats slide manually along the rails, but to adjust the height, this must be done at the dealer’s workshop.
The seat backs have a fixed angle and the head restraints are removable when wearing a helmet, with the seat belt holders having six attachment points.
In active safety and driving assistance, it has auxiliary parking sensors, forward collision warning and involuntary lane departure detection as standard, as well as a wireless charger for mobile phones.
The production being limited to 1,000 copies, few copies will arrive in our country. In Germany, prices start at 165,200 euros.
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