ride quality

I went from a 2013 300 base model to a 2020 300C. The ride is noticeably firmer probably because of the low profile tires (245/45/20). I do not want to give up the 20” wheels which look fantastic on the car, so what can I do to soften the ride? The 300C comes with Firestone Firehawk GT tires...

I'm a noob at all of this. I'm looking for a suspension kit that will provide clients with a comfortable ride. Right now, as the driver, I can feel and hear everything that the car comes across on the road. I have a 2007 300C AWD with roughly 98k miles on it and stock suspension. But I'm...