Lots of XC 29er rims are around 23mm external width, and therefore should be OK with 23mm tyres.
Are you sure?
They'll usually be 19mm internal? 19 is too wide to be good for anything thinner than 28c (with best performance from 32c). Any smaller and they're flexing so much they'll be slow and uncomfortable.
Are you sure?
They'll usually be 19mm internal? 19 is too wide to be good for anything thinner than 28c (with best performance from 32c). Any smaller and they're flexing so much they'll be slow and uncomfortable.