I purchased replacement tires at my local Sam's Club a year ago. When I took my '08 Adventurous RS back to Sam's, to take advantage of their free tire rotation offer, I found that there was not sufficient clearance on their bay's door. The extra height presented by the air conditioner prevented full entry. They suggested I call Sam's in some of the other towns in the area. I called two; neither had any idea how much clearance their doors had. So, I'm faced with a bit of trial an error or just pay to have them rotated. Any suggestions?