SSR Type C RS on closeout 18.4lbs. 18x8 with ET55, they meet SCCA stock class regulations for width and offset. Marked down to $289 from an original price of $454, they'll start going fast when spring rolls around.
The OZ Ultraleggera has also been popular for enthusiasts or racers. Only a tiny bit heavier at 18.5lbs for 18x8, or 19.5lbs. for 18x9 if using a staggered rear setup. They are $335 and $345 (higher price for the wider 9" rears) available in either flat black or silver. (Flat black shown here)