If you are in the market for a new set of hoops the choices have literally expanded. From the inter-war years of fixed gear Six Day racers on the boards at Madison Square Garden to the dawn of the aerodynamic agein the 1908's rim profiles changed little in width or depth and it didin't matter if it was for a tubular/sew up or clincher wheels. In the aero awakening of the 1908's deeper profile rims came to market. 50mm and deeper rims are now common on bikes in road racing and