The Triangle EffeXWinter TW421 is an ultra-high-performance directional winter tire designed for sports cars, premium saloons, and SUVs. Developed in Europe and launched in October 2025, it represents Triangle’s latest advancement in winter tire engineering. The tire combines precision handling, high-speed stability, and reliable performance in snow, ice, and wet conditions. Engineered to deliver control and safety during demanding winter driving, the TW421 introduces new compound technology and optimized tread geometry for consistent performance across temperature variations.

Features & Benefits

• Directional V-Shaped Tread Pattern: Maximizes water and slush evacuation, enhancing traction and reducing aquaplaning risk.
• Advanced Compound Formulation: Incorporates next-generation polymers for flexibility in sub-zero temperatures and improved grip on ice.
• Enhanced Sipe Technology: Provides stronger traction in snow and ice while maintaining block rigidity for stable cornering.
• Rigid Tread Block Design: Improves steering precision and high-speed stability, ensuring predictable control in varied winter conditions.
• Efficient Drainage System: Multi-channel structure prevents water accumulation, maintaining tire contact with the road surface.
• Low Rolling Noise: Optimized tread pattern reduces cabin noise for a quieter driving experience.
• 3PMSF Certification: Fully compliant with European winter performance standards, guaranteeing safe operation on snow and ice.
• Wide Temperature Operating Range: Maintains consistent performance in both mild and severe winter climates.

Year Released

Released in October 2025, the EffeXWinter TW421 is a new-generation model in Triangle’s premium winter lineup.

Regions Availability

The Triangle EffeXWinter TW421 is currently available in Europe, with production and testing aligned to local regulatory and climatic conditions. The initial rollout includes 50 size variations ranging from 17 to 20 inches, targeting the premium performance vehicle segment.

Vehicle Compatibility / Popular Vehicle Fitments

Based on its sizing and market focus, the EffeXWinter TW421 suits performance-oriented passenger cars and luxury SUVs. Some popular fitments include:

• Audi A5 / A6 / Q5
• BMW 3 Series / 4 Series / X3
• Mercedes-Benz C-Class / E-Class / GLC
• Volvo S90 / XC60
• Volkswagen Arteon / Touareg
• Lexus IS / NX
• Jaguar XF / F-Pace
• Alfa Romeo Giulia / Stelvio

Note: Always consult with a tire specialist or the vehicle’s manufacturer to ensure correct tire fitment.

Final Thoughts

The Triangle EffeXWinter TW421 is engineered for drivers who demand precision handling and assured safety from their winter tires without compromising comfort. Its combination of advanced compound chemistry, structural rigidity, and effective water evacuation provides a confident driving experience across wet, icy, and snowy roads.