Dunlop SP Winter Sport 3D DSST Run-Flat Winter Tire

The Dunlop SP Winter Sport 3D DSST is a high-performance run-flat winter tire engineered for passenger cars, coupes, sedans, and sport-oriented vehicles that demand confident traction and responsive handling in severe winter conditions. Built on Dunlop's advanced winter technology platform, this tire delivers exceptional capability across ice, snow, slush, and cold wet pavement — without compromising dry-road performance.

Advanced Winter Traction Technology:

• Active Traction Sipe System: A multi-variable sipe architecture featuring three distinct sipe types and depths, strategically distributed across the tread for superior braking, acceleration, and cornering grip on ice and snow-covered surfaces
• Intermediate Block Sipes: Maximize grip on snow and ice while preserving strong handling performance on dry winter roads
• 3D Shoulder Sipes: Enhance shoulder stability, cornering precision, and road feedback across all winter driving conditions
• Directional Tread Design: Four directional grooves efficiently channel water and slush away from the contact patch to reduce hydroplaning risk and improve wet-weather handling

Performance Engineering:

• Multi-Radius Tread Technology (MRT): Multiple radii of curvature distribute footprint pressure evenly for improved dry traction and consistent, long-lasting tread wear
• Reactive Silica Tread Compound: Retains elasticity at low temperatures for enhanced road contact, uniform adhesion, and confident cold-weather grip
• Jointless Band Technology: Maintains tire shape integrity under high-speed pressure for smooth, stable highway performance and even wear

Dunlop Self-Supporting Technology (DSST) — Run-Flat Construction:

The DSST run-flat system features a patented reinforced sidewall construction that supports the vehicle's weight even after a complete loss of air pressure. This technology allows continued driving for up to 50 miles at up to 50 mph after a puncture under normal conditions — eliminating the need for an immediate roadside tire change and delivering peace of mind on every winter journey.

Three-Peak Mountain Snowflake (3PMSF) Rated: These tires meet specific performance requirements for use in severe snow conditions, as designated by the industry-standard Three-Peak Mountain Snowflake symbol.

OE Approved: The SP Winter Sport 3D DSST is approved as original equipment by leading European automakers including Audi, BMW, and Mercedes-Benz, reflecting its engineering precision and adherence to the highest performance standards.

This tire line is eligible for the Highway Auto and Light Truck Tire Replacement Limited Warranty, covering most passenger tires with free or prorated-price tire replacement. Exclusions apply; see full warranty details for more information.