Guys, I am ordering a new MKZ Hybrid and can't choose between the 18" and 19" wheels. After testing both, I could swear the bigger 19"s actually provided the softer ride. How is that possible? I thought the smaller tire would provide the softer, more luxury feel. Could the dealer just be underinflating the 19s? I did switch the 18s to "comfort mode" and it got a little softer but not as soft as the 19s. I feel like I am taking crazy pills.please help.