Quote Originally Posted by audib7a4 View Post
i might have my rims up for sale in 2 weeks if you are interested, im selling my car...

18x8 OZ superleggera
nitto 555 tires 235/40/18 all around with 60-70% thread
o and they only weight 18 lbs each

^^those wheels are cast as most are but are fairly light for the weight as they are heat treated.

No one mentioned this yet but alot of companies take a cast wheel and heat treat or shot peen the wheel. This adds to the strenght of the wheel by 'cleaning up' some of the weak spots that the casting process are prone to.

Enkei, OZ, bbs and others do this on their lighter wheels and if you come across a fairly light cast wheel chances are its either heat treated or shot peened. Its a less expensive way than forged to get a lighter wheel but you will notice the cast/peened are usually a bit more expensive than pure cast but cheaper than forged.

As for forged there are a few companied that do semi solid forging(SSR) You will notice ssr makes some real light wheels(almost too light) using this process which is not as ideal as forged but again a way to get the cost down while not having to use as much metal to get a strong wheel.

figured i would chime in as I spent 7 month researching(nearly obsessive) when deciding what wheel to get for my auto-x car back in the day