One of Dunlop's most popular cross-ply tire designs, the B5 became the default choice for many British saloons and sports cars from the 1930s into the post-war period. As such, it remained in production for the vintage car market until Fort Dunlop's final closure in the 21st century! Its distinctive tread pattern and square shoulder make it easily recognizable. Ensign developed a B5 pattern replacement tire through its historic relationship with Dunlop and using original molds. The result is manufactured in the UK as the Ensign B5 and comes in various sizes to suit 17, 18, 19 and 20 inch wheels. This Ensign B5 tire in size 525/55600-19 is an ideal tire for Rolls Royce 20/25 and 25/30 models. It also fits: Alvis Speed 20, Crested Eagle and 3.5L; Invicta 4.5 liters; Lagonda 3 liters and 4.5 liters; Talbot 105 and 110; Armstrong Siddeley 17 and 20; Austin 16 and 18; Daimler 20hp; Hillman 14, 16, 20 and Wizard and all the others. It is a tube tire.