Sheldon Brown says all rims between and including 23 - 32 would be compatible: http://www.sheldonbrown.com/tire-sizing.html
My tyre is 33.5 - so not really suitable for a 19mm rim. Bulb effect and that.
@Thrasher 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.
Sheldon Brown says all rims between and including 23 - 32 would be compatible: http://www.sheldonbrown.com/tire-sizing.html