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Choosing the right brake pads is essential to ensure safety, comfort, and performance in any driving situation. From daily use with a sporty touch to demanding circuit or rally racing, each compound has its own characteristics that influence vehicle response. In this context, SDT Brakes has established itself as a manufacturer of SDT brake pad compounds certified under the standard ECE R90 , plus having specific developments for the racing world.
1. Introduction
When pressing the brake pedal, we rely on the pad's ability to generate the necessary friction and control the vehicle's stop. An unsuitable compound can cause responses ranging from spongy or overly hard, to premature disc wear or loss of effectiveness due to overheating (fading).
SDT Brakes combines years of research in materials and tribology with advanced manufacturing processes. This is how two of its most representative ranges are born:
High Performance S50 , aimed at daily sports use.
Racing RS55, Conceived for pure competition (not ECE R90 homologated)
2. S50 Compound – Daily Sports Use
Composition
The S50 compound employs an optimized organic mixture , enriched with high thermal resistance materials and "low-dust" additives to reduce dust generation.
Main Properties
Modulability and braking from cold : responds progressively, without jolt or sudden deceleration peaks, even when cold.
Lower disc wear : thanks to its formulation, it preserves rotor life, reducing maintenance costs.
Temperature range : maintains efficacy up to 550°C
Stable coefficient of friction : guarantees that braking power does not vary drastically between 100°C and 400°C, making it ideal for a mix of urban driving and high-speed segments.
Ideal for
Sports cars, compact sports vehicles, and sedans with dynamic driving but not demanding circuit conditions. Perfect for those seeking a performance boost without sacrificing comfort and low noise levels.
3. RS55 Compound – 100% Competition Use
Composition
The RS55 compound is made using a metallic organic formula , favoring heat dissipation and bite capability on the disc.
Main Properties
High coefficient of friction (> 0.50) : offers superior braking power, reducing stopping distances in extreme conditions.
Thermal resistance up to 700°C : suitable for prolonged sessions on track and track days without degradation.
Excellent initial bite : immediate response to the pedal, crucial in racing.
Fading resistance : maintains efficacy even after successive cycles of hard braking.
Validation on track and testing bench : tests with vehicles such as León Cupra, Mégane RS, Formula cars, rally cars… confirm its performance.
Ideal for
Circuit track days, rallies, and any racing modality, both on the front and rear axes of lightweight or high-power vehicles.
4. Direct Technical Comparison
| Feature | S50 (High Performance) | RS55 (Racing) |
|---|---|---|
| Optimal Temperature | 0 °C – 550 °C | 0 °C – 700 °C |
| Initial Friction | Medium | High |
| Dust Generated | Medium | Medium – High |
| Disc Wear | Minimal | Medium (higher demand) |
| ECE R90 Certification | ✅ Yes | ❌ No (competition only) |
| Noise Level | None | Low |
5. Conclusion
The choice between High Performance S50 and Racing RS55 depends on the intended use and the driver's profile:
- S50 is the optimal choice for those who use their vehicle daily and want a sporty touch without compromising brake durability or acoustic comfort.
- RS55 is designed for motorsport enthusiasts, track day drivers, and rally participants where maximum braking power and thermal resistance are prioritized, sacrificing some cleanliness in wear and dust generation.
If you need technical advice to determine which SDT brake pad compound best suits your car and driving style, contact our team. Check the product sheets and request personalized support if needed. Optimize your braking with SDT Brakes and feel the difference in every curve!