20" wheels
 

I was just on GmPartsDirect.com and they have the GM 20" accessory wheel packages for $2299.95. That includes 4 20" wheels, 4 tires and 4 TPM. The site also said that they come mounted and balanced. I just wanted to pass this along in case someone is looking at purchasing wheels, I would hate for someone to go to their local dealership and pay more.