A definite upgrade from the stock wheel trim is the carbon fiber wheel trim with accents. You can add to your Sport Line, M Sport Line or Luxury line.
Or, just keep it classy for the M2, M3, and M4 guys.
Carbon fiber is high quality 2x2 glossy weaves.
The trim just swaps with your existing one. You get the whole outer carbon piece with the inner accent. Or, you can also opt for the inner piece only.
Installtion requires no professional help. Just take your wheel off, and you're good.
Fitment is perfect and much like OEM.