Forgot to mention........Double Coin tires still hold air. At the time Roger and I bought ours they were about 1/2 the price of comparable Michelin tires. I have tag axle Michelins with a 2003 date code with zero signs of sidewall cracks so I continue to watch them very closely, but continue to run them. When I do decide to replace them I will shop for the best price and this time the new ones will go on the steer axle. The last time the Double Coin went on the drive and Michelins went on the steer, but unless someone knows why Michelins can justify their pricing I cannot bring myself to pay what they want.