Open tubular tyres can be a bit fiddly to fit as they come out the box so flat. A bit of air in the tube whilst trying to fit them and keep their shape can help, as can folding them a bit along their length. Tyres rarely blow off a rim if the bead has been seated properly.
Open tubular tyres can be a bit fiddly to fit as they come out the box so flat. A bit of air in the tube whilst trying to fit them and keep their shape can help, as can folding them a bit along their length. Tyres rarely blow off a rim if the bead has been seated properly.