Don't want to spend the $$ for new center caps?
Note- I did not come up with this idea, others have used this way.
1.) Measure the center cap spacing on the wheels
2.) Drive to Lowes, Home Depot or the like
3.) Go to the electrical section
4.) Find the knockout plug you need:
5.) Walk out happy cause you just spent a grand total of $4.50 for new center caps
What it looks like:
Installed (you may have to bend the tabs in the back to get it seated just right):
If you like you can paint it to match the wheel or do what I'm going to do and order some overlays.