Ten flat tires in five weeks. Five flats on my tractor's rear tires from thorns while bush hogging. Had to buy a new tire and several new tubes. Rear tractor tires aren't cheap. Spent so much time at the truck tire center I know all the employees now. Now it's my trailer's turn. Tried plugging the same trailer tire but it came out, three times. Friday night a guy pulled up besides me and tells me I'm running on the rim. Sure enough tire gone and running on the remnants of the tire bead. Another mile and the rim would have been trashed. Sure hope I'm done with flats for a long time. Kind of doubt it though.