Michelin X-Stop 165R400 Tire 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. 165R400 87S TT X Radial Radial Blackwall Tire 165R400 Fitment Chart 1951-1953 Alfa Romeo 1900 C 1951-1953 Alfa Romeo 1900 TI 1956-1960 Alfa Romeo 1900 Super 1961-1963 Alfa Romeo 2000 Roadster 1963-1964 Alfa Romeo 2600 Sprint,Spider 1950-1953 Lancia Aurelia Alle Typen 1954-1956 Lancia Aurelia B12 1954-1959 Lancia Aurelia B20 1957-1959 Lancia Aurelia B24 1954-1959 Lancia Aurelia GT 2500 1956-1960 Lancia Flaminia Standard 1959-1960 Lancia Flaminia Coupe 1953-1955 Citroen W-11 B-4 Standard 1953-1955 Citroen W-11 BL-4 Standard 1956-1957 Citroen 11B Standard 1956-1965 Citroen DS19 Sedan 1956-1965 Citroen ID19 Sedan 1960-1965 Citroen ID19 Wagon Fits these models and others. Please refer to your owners manual for details on the correct tire fitment requirements.