My first experience with oversized tubulars has been pretty great. These are some Challenge Strada Bianca 700x30c mounted to Major Tom rims. I haven't taken them on a long ride yet, or over any rough stuff, but my commutes have gotten a lot faster. They're very fast and comfortable, even though I used too much glue on the front tire and didn't mount them perfectly the first try. They still aren't 100% aligned, but I can barely tell.
