You are reading a single comment by @dk 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.
dk
According to bicyclerollingresistance.com they rate the same as GP4000s ii for rolling resistance and puncture protection but the sidewalls might be a bit more supple. It's just whether you feel gum walls are worth £50 extra...