This process of making wheels is exclusive to Rays. The wheel shown is the Volk TE-37, a wheel commonly used in racing in Japan and highly sought-after in the tuning market.

The exclusive forging process creates a very strong yet very light wheel. I have a set of these on my car and even though it's an inch larger than the stock wheels it's about 9 pounds lighter per corner including tires.

The optional forged 6-spoke 18" wheels for the Nissan 350Z is also made by Rays in the same procedure.

There are other wheel makers who forge wheels, but something like 99% of the wheels in the market (for manufacturer or aftermarket) are cast. That's done by a simple mold using poured liquid aluminum. A much cheaper process.

 

Thanks for sharing that with us, it is quite amazing how they doing it. I guess that is why they are more expensive then other brands.