A couple of weeks ago our MS received its annual service. As part of the service, the car was aligned, the two rear tires were replaced (with the same factory OEM 19" MXM4's), and the SC performed a "ride height calibration." Upon driving the car afterwards we detected a very noticeable increase in body roll, especially at highway speeds. It felt like the suspension was on its highest setting all the time. We, of course, checked this and the display reports that the suspension is lowering and raising correctly with a change in speed. We rebooted the car in case the problem was correctable that way but saw no change. We've verified that the air pressure is the same as we normally keep it (right at 45). We thought that perhaps the new rear tires were the culprit and they would settle down in a couple hundred miles. No. It's been a few weeks and the body roll is still unchanged. We're pretty certain it's not our imagination because we've done controlled tests where we drove on known sections of road, at the same speed as before, and noted a the increased squishiness in handling. Before I contacted the service center and asked about it, I wanted to bounce this off of the collective. Has anyone experienced similar behavior with their air suspension? Any ideas what might be going on?