Just a week after its highly anticipated launch, the F80 BMW M3 and F82 BMW M4 were already making waves on the streets and workshops. Following up on initial dyno tests, automotive experts got their hands on a Mineral White M3 and an Alpine White M4 to further explore their performance metrics, focusing on dyno testing, weight analysis, and initial modifications.
Dyno Performance of the 2015 BMW M4
The Alpine White BMW M4 was put to the test on a Dynojet dyno, mirroring previous tests on a Yas Marina Blue M3. The results further solidified the notion that BMW had conservatively rated the F8X’s engine power. Despite hot and humid conditions, the M4 impressively registered 421whp and 410wtq using STD correction. This figure highlights the robust performance capabilities of the new M4, suggesting it delivers more power than officially stated.
Further dyno testing included endurance runs – five consecutive runs without cooldown periods – to assess the vehicle’s reaction to heat soak. This rigorous testing provides insights into the M4’s consistent performance under stress, crucial for both track enthusiasts and everyday drivers.
2015 BMW M3 and M4 Weight Comparison
A key aspect of the analysis was a direct weight comparison between the M3 and M4. Notably, the Mineral White M3 was equipped with optional M Carbon Ceramic Brakes, while the Alpine White M4 had standard brakes. Both cars shared identical build specifications otherwise.
2015 Mineral White BMW M3 Specs & Weight:
- 0ZDB Driver Assistance Plus
- 0ZEC Executive Package
- 0ZLP Lighting Package
- 02MK M Double-clutch Transmission (DCT)
- 02NK M Carbon Ceramic Brakes
- 02VF Adaptive M Suspension
- 02VZ 19″ Black Wheel 437 M Mix Tire
- Fuel: Empty (no driver)
- Weight: 3562lb
2015 Alpine White BMW M4 Specs & Weight:
- 0ZDB Driver Assistance Plus
- 0ZEC Executive Package
- 0ZLP Lighting Package
- 02MK M Double-clutch Transmission (DCT)
- 02VF Adaptive M Suspension
- 02VZ 19″ Black Wheel 437 M Mix Tire
- Fuel: 1/2 Tank (no driver)
- Weight: 3579lb
Despite the carbon ceramic brakes on the M3, which are typically lighter, the M3 weighed in at 3562lbs, only 17lbs less than the M4. This minimal weight difference suggests both models are engineered with similar weight considerations, with options like carbon ceramic brakes offering marginal weight savings.
Initial Modifications: Macht Schnell Spacers for BMW M3
Following the performance evaluations, the Mineral White M3 underwent initial modifications. While the M4 remained in stock configuration, Macht Schnell spacers were installed on the M3 to enhance its stance and handling.
The modifications included:
- Macht Schnell Competition Wheel Spacer Kit – 12mm (front)
- Macht Schnell Competition Wheel Spacer Kit – 15mm (rear)
- Macht Schnell 90mm Competition Stud Conversion Kit
These spacers provided a more aggressive stance for the M3, improving its visual appeal and potentially enhancing cornering stability. The stud conversion kit also facilitates quicker wheel changes, a practical upgrade for track days.
Conclusion
Initial assessments of the 2015 BMW M3 and M4 reveal that both vehicles not only meet but exceed performance expectations. Dyno tests confirm BMW’s understated horsepower figures, while weight comparisons provide valuable insights into their engineering. Early modifications like Macht Schnell spacers demonstrate the aftermarket’s swift response to enhance these already impressive machines, setting the stage for further customizations and performance tuning within the BMW F8X platform.
