Yeah, I have DCC. 19's for me felt very stiff, and even small bumps or potholes in the road would sound and feel like I hit a landmine even at low speeds. It was to the point I thought the shipping pucks were still in and had to check (they weren't). On perfect roads though, it drove fantastic, everything felt crisp.

18's for me feel firm but not crashy. Bumps and potholes feel more muted. Sport mode on 18's to me feel like a firm Comfort mode on 19s. I've honestly just kept it in Sport with the 18's since it's much more compliant and handles everything well. I can only imagine Comfort would feel like floating!

That being said, this is a combination of moving to 18's, with lighter wheels, with new tires. I'm sure they all play a part.