I just spent $800 on a set of Michelin Primacy MXM4 tires. So far in 100 miles, I can tell no noticeable difference over the OEM Continentals. I drove another A3 last week that the dealer loaned me and it drove the same with the same tires. So I thought the tires were the common issue and went for the Michelins. Unless some miles on the tires can improve the ride, I am very displeased with the ride quality. The A3 just isn't as good of a ride as my Jetta was. It's a constant shake on my butt and I can't take it anymore. Does anyone else feel the same?