The debate around BMW’s CS models often boils down to whether they justify their premium over the standard and Competition versions. It’s a valid question, and the answer, as with most things in the automotive world, depends heavily on individual needs and priorities. BMW themselves offer a concise breakdown of their ///M trim levels:
- Base: Daily use + Racetrack capable
- Competition: Daily use + Enhanced racetrack performance
- CS: Racetrack optimized + Still practical for daily use
- CSL/GTS: Born for the Racetrack, street legal for track access
This hierarchy succinctly positions the BMW M4 CS as a sweet spot – biased towards track performance yet retaining everyday usability. Unlike some track-focused specials, the M4 CS isn’t just about stripping weight and adding power; it’s a carefully engineered package where numerous enhancements work harmoniously to elevate the driving experience on and off the track.
The M4 CS package isn’t merely a Competition Package with extra bits; it’s a distinct model with its own set of upgrades. Let’s delve into the specifics that set the BMW M4 CS apart:
- Enhanced Powertrain: A refined engine tune delivers a notable increase of up to 29 horsepower over the base M4 and Competition, accompanied by a torque boost of 38 lb-ft. This translates to more responsive power delivery across the rev range, enhancing both track performance and everyday driving enjoyment.
- Distinctive Exhaust Note: The single-walled exhaust tips, featuring the ///M engraving, aren’t just cosmetic. They contribute to a sharper, more resonant exhaust note, amplifying the aural experience without being overly intrusive.
- Lightweight Drivetrain Components: The CFRP (Carbon Fiber Reinforced Plastic) driveshaft is a key component in reducing rotational inertia. This improves drivetrain rigidity and responsiveness, contributing to quicker acceleration and sharper handling.
- Aerodynamic Enhancements: The carbon fiber front splitter and Gurney flap on the rear spoiler are functional aerodynamic elements. They generate downforce, especially at higher speeds, providing increased stability and cornering grip on the track.
- Weight-Saving Carbon Fiber Hood: Beyond its aggressive aesthetics, the carbon fiber hood serves multiple purposes. It reduces weight at the front of the car, improving weight distribution and handling. It also aids in engine cooling, crucial for demanding track sessions.
- Lightweight Forged Wheels: The unique 763M wheels, measuring 19 inches at the front and 20 inches at the rear, are forged for optimal strength and reduced weight. This reduction in unsprung weight further enhances handling agility and responsiveness.
- Track-Focused Tires: The M4 CS is equipped with Michelin Pilot Sport Cup 2 tires (in markets where available, sometimes PSS in US), known for their exceptional grip in dry conditions. These tires are instrumental in maximizing the car’s track performance.
- Recalibrated Driving Dynamics Systems: The ABS, DSC (Dynamic Stability Control), EPS (Electric Power Steering), EDC (Electronic Damper Control), DCT (Dual Clutch Transmission), and e-diff (electronic differential) are all specifically recalibrated for the M4 CS, optimized to work in conjunction with R-compound tires and the car’s overall track-focused setup.
- Retuned Suspension: The suspension setup of the M4 CS utilizes Competition Package springs and rear sway bar, but pairs it with the base M4 front sway bar. This combination is engineered to reduce understeer, a common trait in performance cars, and provide more neutral and balanced handling.
- Increased Top Speed: The top speed limiter is raised in the M4 CS, allowing for higher speeds on tracks where regulations permit.
- Weight-Optimized Interior: Lightweight door cards with pull straps and the deletion of the center armrest are functional weight-saving measures. While some might perceive the armrest deletion as a compromise, it can actually enhance elbow room for track driving. Reduced sound deadening further contributes to weight reduction and amplifies the raw driving experience.
- Alcantara Interior Trim: The Alcantara steering wheel and seat bolsters provide enhanced grip, particularly beneficial during spirited driving and track use. The Alcantara dashboard trim with CS engraving adds a touch of exclusivity and sporty flair.
- Cosmetic Carbon Fiber Elements: The carbon fiber rear diffuser adds a sporty aesthetic touch, while the OLED tail lights provide a modern and distinctive rear lighting signature. CS door sills further differentiate the model.
- Exclusive Color Option: The optional Lime Rock Grey paint color is exclusive to the M4 CS, adding to its visual appeal and exclusivity.
From the perspective of an enthusiast who seeks a single car capable of both exhilarating track days and comfortable daily commutes, the BMW M4 CS hits the mark. It’s a car that can handle the rigors of daily driving in various conditions while being genuinely rewarding on the track. The magic of the M4 CS lies in the synergy of its upgrades. Each individual improvement might seem incremental, but collectively, they create a significantly enhanced driving experience. The retuned suspension, increased power across the rev range, reduced weight, improved aerodynamics, and optimized electronics all work in concert to deliver a car that feels sharper, more responsive, and ultimately faster than a standard M4 or even a Competition model.
While the performance gains over the Competition Package might seem modest on paper, the real-world difference, particularly on the track, is palpable. The M4 CS simply feels more focused and capable. However, it’s worth acknowledging that to achieve this heightened focus, some comfort and convenience features are omitted compared to the base and Competition models.
Features not available on the BMW M4 CS include:
- Comfort Access
- Heated Steering Wheel
- Full Leather Door Cards
- Dual-Zone Climate Control
- Center Armrest
- Rear Center Console HVAC Vents
- Surround View Camera
- Harman Kardon Sound System
- Active Blind Spot Detection
- Driving Assistance (Collision Avoidance)
- Parking Assistant (Self Parking)
- Sunroof
- Headlight Washers
- Rear Sunblind (Canada only)
- Manual Transmission Option
In conclusion, the BMW M4 CS is not for everyone. If your priority is ultimate luxury and a plethora of driver assistance features, the base or Competition M4 might be a better fit. However, for drivers who prioritize track performance and a more engaging driving experience, without sacrificing daily usability, the BMW M4 CS represents a compelling package. It’s a meticulously engineered machine that excels as both a track weapon and a surprisingly practical daily driver, making it a truly versatile and desirable performance car.
