Watch out for the Hirun brand made in china commonly sold at Amazon, Walmart etc.. I bought one of those for my cart, it lasted about a year. It cracked, bubbled, and went flat. It seemed to basically be an inner tube with tread. I then looked for a Carlisle brand, which to me seemed thicker and heavier, sadly enough it too is now made in china but the tire still is holding air. A friend recently brought over a new wheel barrow tire and rim that he recently bought. Same Hirun brand, cracked and leaking, he chose to put a tube in it (Waste of time and money but, he didn't ask my opinion). I helped him get the tube in and filled it with air and he was happy.