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Fronway Speedway 56 – 245/40ZRF19 98W XL Run-Flat

Description: The Fronway Speedway 56 in 245/40ZRF19 98W XL is an Ultra High-Performance (UHP) tyre that combines sporty handling characteristics with the critical safety assurance of run-flat technology. This size is commonly fitted to the front or rear axles of premium sports sedans and high-end coupes, such as the BMW 5 Series, Mercedes-Benz E-Class, and performance variants of the Audi A6/A7. It is designed to offer excellent high-speed stability and grip in both wet and dry conditions, alongside the functionality of limited-distance mobility after a puncture.

Key Features and Technical Details:

• Run-Flat Technology (RFT): The primary safety feature is the reinforced, self-supporting sidewall structure. This design enables the tyre to maintain its shape and support the vehicle’s weight following a complete loss of air pressure, allowing the driver to continue their journey safely for a limited distance (typically up to 50 miles / 80 km) at a reduced speed.

• Extra Load (XL) Capacity: With a load index of 98, this tyre is certified to support a maximum load of 750kg (1653 lbs) per tyre. The XL (Extra Load) designation indicates a robust internal construction necessary to manage the higher weight and dynamic forces of modern, powerful vehicles equipped with run-flat tyres.

• High-Speed Stability: Rated W (up to 168 mph / 270 km/h), the Speedway 56 is built for sustained high-speed driving. The ‘ZRF’ in the size code confirms a high-performance radial run-flat construction, designed to handle the thermal and structural demands of fast driving.

• Asymmetric Tread Design: The high-performance asymmetric tread pattern utilizes a continuous, solid centre rib to deliver precise, immediate steering response. The large, stiff outer shoulder blocks maximise the contact patch during lateral movements, thereby enhancing dry grip and cornering stability.

• Hydroplaning Resistance: The tread pattern features four wide, deep circumferential grooves. These channels are engineered for highly effective water evacuation from the footprint, significantly reducing the risk of hydroplaning and improving braking and handling in wet driving conditions.

• Comfort-Focused Engineering: The tread block pitch sequence is optimized to be non-uniform. This design strategy breaks up and diffuses air-pumping noise and road harmonics, helping to minimize interior road noise and contribute to a more comfortable ride, despite the inherently stiffer nature of run-flat sidewalls.