maybe roughen up the edges of the tyres, when they`re new and unused they can be very slippery bc the surface is not worn at all. a few strikes with sanding paper on the bead will roughen up the rubber enough for the tyre staying on the rim. it worked for me several times.
maybe roughen up the edges of the tyres, when they`re new and unused they can be very slippery bc the surface is not worn at all. a few strikes with sanding paper on the bead will roughen up the rubber enough for the tyre staying on the rim. it worked for me several times.