Understanding folding bike tyre sizes
Folding bikes use specific tyre sizes. Finding replacements requires understanding the sizing system.
Common folding bike tyre sizes
- Brompton (16"): 349mm ETRTO, look for 349 sizing
- 20" wheels: Usually 406mm ETRTO (20 x 1.5 or similar)
- 24" wheels: Usually 507mm ETRTO
Check your current tyre sidewall for exact sizing.
Finding replacement tyres
- Note the ETRTO size from your current tyre
- Match width to your riding needs (wider = more comfort, narrower = faster)
- Consider puncture protection for commuting
- Specialist folding bike shops stock common sizes