I've had them for about a month now. I waited until it was warm enough to switch from winter tires to summer tires to mount them. The instructions state that the wheels don't need to be removed to install the fenders, but it was easy to get the wheels out of the way. It took me about 15 minutes to install each one. They look great and I think they will take the brunt of the dirt, gravel, sand and rocks thrown up by the wheels. I live in rural Alaska where many of our roads are gravel. I hope the protection protects the paintwork and reduces or eliminates corrosion.