You are reading a single comment by @fredtc and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
@fredtc
no, the differences are to do with aerodynamics. both rims will fit both size tyres. the wider rims are believed by some to make you faster due to the profile of the tyre on the rim. see
http://www.slowtwitch.com/Tech/Implications_of_Rim_Width_2803.html
The U shape is also refered to as torrodial which is tested as more aerodynamic that the V shape, which is now somewhat outdated.