Originally Posted by B-Line

The carbon leather is made to simulate the weave of carbon fiber. Since I'm not a fan of carbon fiber to begin with, didn't real care much for the weave.

Piano black looks gorgeous but everyone says the same thing. It shows dirt horribly and scratches VERY easily.

The Aluminum trim is the "STANDARD" XM trim. So if you don't order the carbon leather, piano, etc. it comes with the Aluminum trim automatically.