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Fronway Speedway 56 – 225/45ZRF17 94W XL Run-Flat

Description: The Fronway Speedway 56 in 225/45ZRF17 94W XL is a high-quality Ultra High-Performance (UHP) tyre that integrates essential run-flat safety technology. This specific size is one of the most common fitments for performance-oriented mid-sized saloons and hatchbacks, including models like the BMW 3 Series, Mercedes-Benz C-Class, Audi A4, and various performance vehicles that require the added safety and convenience of run-flat tyres. The Speedway 56 is designed to deliver reliable high-speed handling and wet traction, coupled with the critical benefit of extended mobility after a puncture.

Key Features and Technical Details:

• Run-Flat Technology (RFT): The defining feature is the self-supporting sidewall structure, which is heavily reinforced. In the event of a tyre puncture and subsequent air loss, these sidewalls support the vehicle’s weight, allowing 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 means this tyre is rated to support a maximum load of 670kg (1477 lbs) per tyre. The XL (Extra Load) designation confirms a robust construction that is vital for handling the dynamic load and suspension demands of modern vehicles, especially those designed around the use of 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 signifies a high-speed radial run-flat tyre, confirming its structural integrity and ability to maintain performance under thermal stress.

• Asymmetric Tread Design: The tyre utilizes a performance-tuned asymmetric tread pattern. It features continuous center ribs for excellent straight-line stability and steering responsiveness, while the sturdy outer shoulder blocks provide maximum lateral grip for sharp, confident cornering.

• Hydroplaning Resistance: The tread pattern incorporates four deep, wide circumferential grooves. These channels are engineered to rapidly and efficiently evacuate water from the contact patch, significantly enhancing resistance to hydroplaning and improving braking traction on wet 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 scatter noise frequencies generated by road contact, thereby contributing to a quieter and more comfortable driving experience.