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Fronway Speedway 56 – 255/35ZRF18 94W XL Run-Flat

Description: The Fronway Speedway 56 in 255/35ZRF18 94W XL Run-Flat is a highly specialized Ultra High-Performance (UHP) tyre, characterized by its wide footprint and extremely low-profile design, combined with crucial run-flat safety technology. This size is typically used on the drive axles (often the rear) of high-performance sports sedans, coupes, and roadsters, such as the BMW M3, Mercedes-Benz C63 AMG, or other vehicles in staggered fitments. It is engineered to deliver maximum cornering grip, precise steering response, and exceptional high-speed stability, complemented by the security of extended mobility after a puncture.

Key Features and Technical Details:

• Run-Flat Technology (RFT): The defining safety feature is the heavily reinforced, self-supporting sidewall structure. This robust construction allows the tyre to maintain its structural integrity and support the vehicle’s weight following a complete loss of air pressure, enabling the driver to continue driving safely for a limited distance (typically up to 50 miles / 80 km) at a reduced speed.

• Extra Load (XL) Capacity: The 94 load index certifies this tyre to support a substantial maximum load of 670kg (1477 lbs) per tyre. The XL (Extra Load) designation indicates a reinforced casing structure necessary to withstand the high inflation pressures and dynamic forces common in high-performance and run-flat-equipped vehicles.

• High-Speed Stability: Rated W (up to 168 mph / 270 km/h), the Speedway 56 is certified for demanding, sustained high-speed applications. The ‘ZRF’ in the size code confirms a high-performance radial run-flat construction, optimized to resist heat build-up and maintain performance integrity under extreme conditions.

• Extreme Low-Profile Handling: The extremely low 35-series aspect ratio provides minimal sidewall flex, translating into the most direct and immediate steering input possible. This structure is critical for maintaining an optimal, consistent contact patch during aggressive, high-g-force cornering.

• Asymmetric Tread Design: The wide 255mm tread uses an aggressive asymmetric pattern. The wide, stiff outer shoulder blocks are specifically designed to maximize lateral grip and stability, crucial for performance cornering, while the continuous center ribs ensure razor-sharp steering response.

• Hydroplaning Resistance: Wide circumferential grooves are integrated to rapidly and effectively channel water away from the contact patch, enhancing resistance to hydroplaning and improving wet traction.