23Cs definitely do.
I've got then on and took it for a quick spin this morning, all seems okay. Now I'm just wondering if my bike takes proper mudguards, am I better getting them?
I have the two holes at the back of the frame either side of where the rear chainset is, so I assume these are threaded for guards or panniers?
However, I do not have holes under my seat on the frame for a rack. Can you buy an adaptor for this?