My Mooney was designed a long time ago around 27" winter tires and fenders. (The canti bosses are midway between 27" and 700c.) Spent its first several decades on sewups. Rode to the coast 4 years ago on 38c/35c. Now on 28c road tires. He's an all arounder. Takes what he is given and rides them with pride. Someday I'll have to dress him in 27" just for fun.