Depends who you talk to, I give myself at least 10mm extra. Guards are usually relatively accurately measured, tires not so much so best to double check your own inflated tires to confirm.
@withered_preacher started
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.
Depends who you talk to, I give myself at least 10mm extra.
Guards are usually relatively accurately measured, tires not so much so best to double check your own inflated tires to confirm.