with a very loud bang

Cobbles and not being in any sort of rush meant that this happened in an almost ideal location: slightly closer to home would have been better but not inside the house, as it would have frightened the gliffets off everyone. I'd managed to avoid this happening to a rear wheel a while ago but had since been mildly dreading the possibility of it happening to the front, though had not been expecting it on a wheel not yet two years old. The spare bike was in the shed, allowing me to get to the allotment. The spare wheel was in the loft, allowing me to order a replacement rim from the internet.