This spare tire with 4 lug rim holds air as it should and is listed as "new other" because it is unused.  The application chart is based on internet information that is not always reliable.  It is therefore necessary that you check your existing spare to see that it is a match with these photos.  Some cobalts and G5 have 5 lug.  This spare tire with rim is for Cobalts and G5 that have 4 lugs.  Free Fedex ground shipping is to lower 48 states.