Yesterday it happened again: After displaying my wonderful bicycling handling skills to a group of older shopping bike riders, by overtaking them on the pedestrian walk, jumping down to streel level and bunny-hopping over the kerbstone to the pedestrian walk on the other side of the road..... Well, the bunny-hop went wrong and my rear wheel made full and loud contact with the kerbstone resulting in a flat tire. As I was only commuting I had no spare tire, pump, repair kit, tools ect. with me. So what to do? As usual I rode about 2 km to the office with a flat rear and then back 4 km home in the evening on the flat rear again. So what do you do? Riding your bike even with flat tires for shorter distances, or leaving it where it is and collect it later? I rode home with flar rear wheels, flat front wheels, on clinchers and tubulars, in the dark and in the rain. The best is a flat rear tobular, the worse is a flat front clincher in the rain and dark according to my experience. How high is the risk to permanently damage the rim?