This is probably posted somewhere already, but in case you're curious about wheel weights including the tire:

My 2006 Coupe's 19" rear OEM wheel + 245/40-19 Kumho Ecsta SPT = 48 lbs
Buddy's 2008 Sedan's 17" OEM wheel + 225/55-17 Goodyear RSA = 46.5 lbs

I figured that the 17" wheel/tire combo would be lighter than that. I know the OEM 19's are forged and it looks like they did a good job of making them light, too.

Sonny

 

I measured weighed my OEM 19's with stock tires and about 15% thread left and I got the same readings: 48 lbs.

I also weighed my 19x10.5 Volks GT-S with 275 T1R tires (~75% thread) and they were only 4 lbs heavier.