Van's price of the inner tube for the 5.00x5 tires is more than 5 times the cost of the tube for the 4" nose wheel (which is a far less common size). Further, Michelin airstop tubes are made for everything from aircraft to bicycles to motorcycle tires with the aviation sizes 5 to 50 times the cost of the others. Since tubes are a little flexible in sizing, I wonder if there is tube made for another application (go-cart, or ATV etc) which is close enough to a 5.00x5 tube to be used successfully on our aircraft. Anybody researched or done this?
Bevan