The car really became "meaner" after the factory Continental, making it considerably easier to steer and keep the road, but the comfort suffered greatly as a result. Below are some advantages: No bumps or cuts throughout two seasons of constant road maintenance and curb replacements when handling on any surface. Several drawbacks Immediately dubbing and humming like a steam locomotive below +10 (w221 with a double-glazed window). Tires, in my opinion, are only appropriate for summertime urban sports cars. Don't pay more each day.