I really think they are very good, the quality is good, but the problem was that the first time through the car wash, cleaning the wheels, the machine broke my valve stems. Tires flat immediately. If you don't use a car wash at all, or don't have those long horizontal wheel/tire cleaning brushes, I would recommend these. But I have 20" wheels on a Cadillac CT6 and it seems adding these caps is now causing the valve stem to protrude too far. Luckily there is a tire shop next to the car wash and they fixed it right away so no real damage. They told me they watch it all the time so beware of that particular scenario but other than that I would give them five stars.