A GMC dealership sales guy mentioned that GMC might offer a 20 inch wheel for the Acadia as a factory option sometime during the 2009 model year. This would be great for me since I plan to order/buy a 2009 by February at the latest. This would prevent me from having 4 extra rims and tires (the standard 18 inchers) if I buy dealer installed 20 inchers and tires. Has anyone else heard any rumors related to this? It would almost make sense since the Traverse LTZ will have 20 inch wheels standard.