Hi,
what size is 27" in metric as their are a few different sizes about these days, some call 650B a 26" like conti do.
i'm heading out to the far east soon for a tour and can fit a 650b or 700c to my bike and this is of great interest to me as i do have a slight preference for 650B these days.
i too checked in all the bike shops i saw in Laos and only ever saw one 26" tire there, most were 24" road type.
thanks