I know on my road-bike a get a smidge of overlap.
On a mtb the top tube may be a little longer than on a road bike and the angles a little more laid back, but the wheel and tyre on a 29er is bigger than a 700x23.
Do 29ers suffer from toe overlap, consider also i have size 11 feet? so the small footed saying they don't experience it isn't really going to be helpful.


