Does anyone have problems with hubcaps rotating?

I have seen it happen many times. I have taken hubcaps off just for the purpose of finding the valve stem to check the tire pressure. Some are worse than others and just because you can not turn the hubcap by hand does not mean that centrifugal force can't. You can try bending the retainers so it grips the wheel better but this usual results in a warped hubcap that is difficult to install and remove and may not cure the problem. You can go to your local tire shop and have metal valve stems installed. This will not cure the issue but the hubcap will stop rotating when it hits the stem instead of folding the stem over and causing a leak.