Has anyone had this problem - tyres coming off the wheel? HISTORY Recently I fitted a new 27x 1 1/4 inch wheel, and a new 27x1 1/4 inch Panaracer outer tyre, and a new 27x 1 1/4 inner tube. In addition to being a Panaracer, the outer is labelled as a Pasela Tour Guard, with Kevlar. The instruction on the tyre is to inflate to 95 psi: I did that. PROBLEM I've been riding it for several weeks without problems. Recently, however, the outer came off the wheel (and the inner tube burst as the brake block got under the tyre and caught the tube). I replaced the tube, reinflated: same problem after a few minutes' cycling. I reduced the pressure to 80psi. But the problem persists: the outer came off again. All advice welcome! Thanks