The ride will be harsh on rough roads, but on smooth ones it feels almost stock. No matter what kind of shocks you use, the ride will be harsher. Don't worry it won't be bad, it will still ride like a Mercedes. I have driven many cars since I work at Hertz rental car, and I feel it rides better than an Audi A4. By the way Hertz has Audi, BMW and Mercedes rentals.