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Fronway Speedway 56 – 275/35ZRF19 100W XL Runflat

Description: The Fronway Speedway 56 in 275/35ZRF19 100W XL is a premium Ultra High-Performance (UHP) run-flat tyre, engineered to deliver safety, control, and endurance for luxury sedans and high-powered sports cars. Designed as an economical alternative to premium original equipment run-flats, this tyre is a suitable fitment for vehicles such as the BMW 5 Series and 6 Series, Mercedes-Benz E-Class and CLS, and the Jaguar XF. It combines robust self-supporting technology with an asymmetric tread pattern to ensure reliability and handling precision in both wet and dry conditions.

Key Features and Technical Details:

• Run-Flat Technology (RFT): The tyre features heavily reinforced sidewalls capable of supporting the vehicle’s weight even after total air pressure loss. In the event of a puncture, this design allows you to continue driving for a limited distance (typically up to 50 miles / 80 km) at a reduced speed, ensuring you can reach a safe location for tyre replacement.

• Extra Load (XL) Capacity: With a load index of 100, this reinforced tyre is engineered to support a maximum load of 800kg (1764 lbs) per tyre. This robust load-bearing capacity is essential for managing the heavier curb weight of modern executive cars and ensuring sidewall rigidity under load.

• High-Speed Stability: Rated W (up to 168 mph / 270 km/h), the Speedway 56 is designed for sustained highway use. The ‘ZRF’ size designation indicates a radial run-flat construction optimized for high-performance applications, utilizing a low-heat generating compound to maintain structural integrity at speed.

• Asymmetric Tread Pattern: The tread design features continuous center ribs that provide responsive steering and straight-line stability. Large, stiff shoulder blocks on the outer edge maximize cornering grip, effectively counteracting the lateral forces generated during spirited driving.

• Wet Weather Performance: Four wide circumferential grooves work alongside lateral siping to rapidly evacuate water from the contact patch. This efficient drainage system reduces the risk of hydroplaning and enhances braking confidence on wet surfaces.

• Reinforced Bead Structure: The tyre utilizes a high-strength bead design to ensure the tyre remains firmly seated on the rim, even when operating at zero pressure. This critical safety feature prevents bead unseating during the run-flat phase.

• Optimized Comfort: Despite the inherently stiffer nature of run-flat sidewalls, the tread blocks are arranged in a variable pitch sequence to disrupt airflow and minimize road noise, promoting a quieter and more comfortable cabin environment.