I am not really into after market bits and pieces, but those CarbonDry Protec wheels certainly caught my attention.
Those GT-R wheels were shipped to CarbonDry Japan (カーボンドライジャパン), which they were then refinished in carbon fiber (4 layers!!!) with the company's dry carbon Protec system. The result of course in not only aethetic, as it does improve the strength and it barely adds any weight.
The results below are from a strength test on a 80mm piece of aluminum that is 20mm thick.
I have to admit that it's an amazing job... just take a look at the details! You can also watch a video at this link.