Anyone had a tyre come off whilst riding?

Yeah, on my Kona - relatively skinny rims with 2.3 tyres, neglected to check tyre pressures - landed a small jump a bit sideways and off it rolled.

Also, riding without a tyre is surprisingly bearable on a smooth road.

Yeah, this was on the Walworth road. They've just resurfaced for the Olympics, but only in sections. The bits they've left are awful