As you know, they protect the tires. My RV is in the open desert and these covers last about 3 years before the sun actually hits them. The first thing you always need to do is bungee cords. If they had served longer, I believe they could have received an additional year of service. Even if cracks appear on the surface of the coating, it is best to use Gorilla Tape as it will hold better than other tapes. Of course, if you buy from Camping World, I plan to spend more. Doug
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