This is my 3rd consecutive Acura (01CL, 04TL, 07TL S-type). i was not satisfied with the ride on the 04TL, and replaced the OEM tires with top line Bridgestones. ride improved dramatically. My 07 S-type has a harsh ride with the OEM tires. I realize it has a beefed suspension, but a tire change might be in order. Otherwise I am delighted with the new Acura TL S-type. It is an awesome vehicle in all respects.