They work well (5 weeks installed) with a couple of issues: 1. I haven't had any issues with the seal getting stuck in the tire valve. This could happen if someone over-tightens the cap, forcing the seal into the valve. 2. About a week after installation I checked and was able to tighten each cap 1/8 turn. Since then they have stayed tight so they can stretch a bit at first.3. They're almost neon green while my original Fords were more of a muted green, so I replaced the three remaining Ford caps with a full set of these. They definitely stand out more, but that's not what I intended.4. The package I bought has a lot of them, which isn't a problem, but you should be wondering why it's so expensive to mass-produce a plastic cap and seal.5. I suspect they are not UV resistant and will dry out, crack and fall apart in the future. But who knows when. Our Florida sun is a real test.