After trying to install one of these things for 30 minutes, I think I've figured out how to install these wheel covers. In all the reviews and YouTube videos I don't think I've seen anyone explain this notch on the metal ring. Well, for those who have had trouble installing those hubcaps, you know it's always the last tab on the hubcap that's the hardest to hit. This is where the notch appears. You need to attach the ring to one of the tabs with this notch so that it gives a little more than the others. This should be the last tab you tuck in and it should sit easier as the gap in the metal ring allows the plastic to give off a bit more. Overall the look and fit of the wheels was very good and once I found out fitting the metal ring was a breeze.