Bought these 4 285 75 17" tires for truck about 5 years ago. Truck has been in storage all this time. Noticed getting some dry rot cracks and because have about 4 tons of weight do not want to take chance with tire failure. They are 10 ply and never had flat of any kind. Paid over $1300 for them when I bought them from Discount Tire. Will sell for $400 You can see dry cracks in photos, think they are still under warranty.