german sedans are designed to cruise at very high speeds over less than perfect pavement while maximizing control and comfort....the entire suspension/wheel/tire combo is like a symphony.....tinker around with one part of it and you cant expect to get good results, especially a part as significant as the wheels/tires
"Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery." --Winston Churchill
"The last official act of any government is to loot the treasury." --George Washington