Originally Posted by Jonny B
Have you seen trials bikes though? They have 16/10 or something. Crazy.
But on a fixed / ss bike, if you're hauling up a hill or something on a 10t cog, there's only 5 teeth, maaaaaybe, between scaling it and throwing the chain. Also, smaller chainrings wear faster. Neither of which is a big issue on a trials bike, though.