As much as we all hate to admit it, custom bikes are as much about fashion as they are “timeless design” and “classic style.” Even something as seemingly set in stone and sorted as cafe racers have their own little trends and fads that mat just prove to be long-lasting and classic as the latest Justin Bieber record in a few year’s time. Now I admit I may be swaying the vote a little using a cool-as-fark picture like the one above to open the piece, but I think it’s a great visual representation of the issues at hand. You gotta admit that they do look great, but does a tire designed in the 1950s really belong on bikes being built in 2012? You wouldn’t put oil made to 1950s standards in your engine, or wear a helmet from the Eisenhower era, would you? Or maybe you would…