When I first opened the box these seemed a little lightweight but when I unfolded them and put them on the wheels of my RV they were just fine. The workmanship and materials are great. Time will tell if the materials are the best for exposure to the sun. One suggestion, It would be better for them to be too big than too small. My tires were at the upper limit of the specified range for these covers. I should have ordered the next size larger. My rear tires are dual tires and I cant get my hands between the wheels to tie them on. I don't know what could be done to improve that issue but they stay on just fine without being tied so far. It may be because they're so tight on the wheel. I'd buy them again.