I have 2000 hours plus in general aviation aircraft. I have never had a flat tire. Yet this is the 3rd time I know(including twice personally) that I know of Kilimanjaro being closed due to a caravan with a flat tire. Thankfully, both times, we had either enough fuel to hold while the caravan was towed or it was towed before we arrived. Is there an epidemic of bad tires being sold to caravan operators in Africa? Are we side loading the gear on landings? Why is this happening so much? Why can you taxi off the runway with a flat tire? Is it impossible? I've never tried with a single wheel geared aircraft but I have done it with a multi-wheeled aircraft, not a huge deal.