You are reading a single comment by @Howard 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.
@Howard
It's because they are designed to run 'normal' mtb tyres tubeless; clinchers that weren't specifically designed to be run tubeless. The rim has to be designed to lock the tyre bead in place.