[admin]

From the online order guide, here are the official wheels available for the 2009 Traverse:

NX7 - 17" x 7.5" (43.2 cm x 19.1 cm) steel

QS6 - 18" x 7.5" (45.7 cm x 19.1 cm) machined aluminum

RCM - 20" x 7.5" (50.8 cm x 19.1 cm) machined ultrabright aluminum

Source: http://eogld.ecomm.gm.com/NASApp/domestic/proddesc.jsp?year=2009&regionID=1&divisionID=1&type=0&vehicleID=7175&section=wheels&page=&butID=4