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Fronway Speedway 56 – 225/45ZRF18 95W XL Run-Flat

Description: The Fronway Speedway 56 in 225/45ZRF18 95W XL is a high-specification Ultra High-Performance (UHP) tyre that integrates crucial run-flat safety technology. This size is a very common fitment for the wheels of premium sports sedans and executive coupes, including models like the BMW 3 Series, Audi A4/A5, and Mercedes-Benz C-Class. It is engineered to provide a confident blend of responsive handling and high-speed capability, coupled with the essential peace-of-mind offered by limited-distance mobility after a puncture.

Key Features and Technical Details:

• Run-Flat Technology (RFT): The tyre features highly reinforced, self-supporting sidewalls. This 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 their journey safely for a limited distance (typically up to 50 miles / 80 km) at a reduced speed.

• Extra Load (XL) Capacity: The 95 load index certifies this tyre to support a maximum load of 690kg (1521 lbs) per tyre. The XL (Extra Load) designation indicates a reinforced construction that is vital for handling the dynamic forces and increased curb weight associated with modern, performance-tuned vehicles equipped with run-flat tyres.

• High-Speed Stability: Rated W (up to 168 mph / 270 km/h), the Speedway 56 is certified for demanding, 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 stability.

• Asymmetric Tread Design: The tyre utilizes a performance-tuned asymmetric tread pattern featuring a solid center rib for excellent straight-line stability and steering responsiveness. The robust outer shoulder blocks are designed to maximize lateral grip and stability during cornering.

• Hydroplaning Resistance: The tread pattern incorporates four wide, deep circumferential grooves. These channels are engineered for rapid and efficient water evacuation from the contact patch, significantly enhancing resistance to hydroplaning and improving braking traction on wet road surfaces.

• Comfort-Focused Engineering: Despite the stiffer sidewalls inherent to run-flat designs, the Speedway 56 employs a variable pitch tread block sequence. This technology works to disrupt and minimize air-pumping noise and road harmonics, contributing to a quieter and more comfortable driving experience.