Difference between AMG double spoke wheels?
 

Is there any difference between 2009 AMG 18'' double spoke wheels and 2013 AMG 148'' double spoke wheels ? Same style different years...

I know that one has silver mercedes sign on center caps while the newer has blue center cap...Any other differences?

I'm finding pics on the internet but it's kinda hard to see, they look very similar, but cant really tell whatever the newer model has sharper edges or if its the angle of the camera...