These recoil pads are of very poor quality. One of mine fell off the top cover after 3 weeks of driving. Within another 3 months all 3 other caps broke in exactly the same way. In total it will be about 2500 miles. The flag on the top of the lid seems to have come off immediately. They were not over seated on the valve stem, subjected to any abnormal driving behavior since the factory valve stem caps did not survive 15,000 miles or were vandalized. They're just poorly made. The attached picture shows all 4 broken caps with my remaining spare in the background. I'm willing to admit I got a bad batch but I won't be buying them again.