I had the 303S wheels on my Warbird with some 40's, 42's, and even some 47's. The wheels look good, are fairly light, internal width is ok, but I didn't like the rear hub. Once you get used to riding a hub that has more points of engagement you can never go back. For the same money I'd look at Easton EC90AX wheels with their Vault Hubs that are a bit wider, lighter, and can usually be found on sale over at Bike Tires Direct.