[Johnny Danger]

Originally Posted by ekam

There's wide margin on quality casting and forging between different manufacturers. Forging may not necessary be lighter than quality casting, there are a few lightweight cast wheels out there.

That's also why they cost $600 each discounted.

OZ Superlegerra - cast - 18x8" - 18lbs!!!

http://www.europeancarweb.com/tech/0212ec_yokohama_oz_superleggera_wheels/index.html

http://www.measurespeed.com/oz-rims-wheel-weight.php

A lot of manufactures like Oz have been successful at making some high quality, light weight wheels by using a "flowing forming" casting technique .