Michelin X 125R15 In 1949, Michelin set out to dominate the tire market with a considerable advance in technology. Its revolutionary radial construction of the Michelin X and later the Michelin X-Stop featured the special feature of separating the sidewall function from the crown function. The first major innovation from Michelin, the radial tire was first marketed as the “X” tire in 1949. The advantages of the radial Michelin X tire compared with the cross-ply tire could be clearly seen in all areas. Radial construction offered greater safety, grip and braking performance. Radials also proved economical to use, with double the wear mileage and a considerable reduction in fuel consumption. Drivers enjoyed increased comfort levels thanks to the flexibility of the sidewalls. S Speed Rating S Speed Rated: Up to 112 mph (180 km/h). Often required OE for higher performance trim level classic automobiles. Michelin X tire Radial technology. The advantages of the radial tire compared to the conventional tire can be seen in all areas: Great safety: significantly improved road holding, grip and braking • Economy in use: mileage efficiency doubled, significant reduction in fuel consumption • Great comfort thanks to the flexibility of the sidewalls. Michelin innovation. The first major Michelin innovation, the radial ply tire, was marketed under the name “Michelin Radial X” in 1949. The X equips different categories of cars: from the original and popular 2CV or Coccinelle to the fascinating Mercedes 190 SL or Facel Vega. Michelin Brand Collector Vehicle Tires Michelin is known for its high quality tires, and we keep thousands of popular Michelin tires in stock every day. Our Michelin product offerings include fitments from the 1920’s all the way into the 2000’s, with an intense focus on classic sports cars. Build quality, fitment options and period correct styling makes the Michelin product line a favorite among sports car enthusiasts around the world. 125R15 Tire Conversion Chart Similar Size Radial Alternative: 125/80R15