If i do do it, i'll be getting a dynamo at the same time, so custom wheels.
If you're going 650b, there's some massive tyres you can get, like this in 62mm;
If it's too big, then the modest 50mm Big Ben is ample;
gum walls fam, gumwalls.
I doubt my bike would take 62mm
@edscoble started
London Fixed Gear and Single-Speed is a community of fixed gear and single-speed cyclists.
If i do do it, i'll be getting a dynamo at the same time, so custom wheels.