Bone stock 2011 wagon. I took it to the dealer for 50,000 mile items. Changed oil, transmission fluid, and cooling system. When I picked it up the ride was terrible..very harsh..felt more stiff that Sport Mode. I took it back and had them check tire pressures. They said that it would not make any difference to which I inform them that with low profile tires that are 12" wide there is a large impact of over inflation. Reduced the inflation from the 38-40 psi they put in to the 36/36 correct pressure. I have now verified that the performance is way down. 0-60 has always been about 4.5-4.7..it is now 6.0-6.1..what could they possible have done to screw up the performance??