It might be my imagination (or the fact that I'm getting older), but, I swear that my ride is getting firmer with time. So much so that I've started to cringe when I go over even the smallest imperfections on the road. I currently have 67k miles on my 2016 Model S RWD. I mentioned it to the service center when I went in for an airbag recall but they said it felt fine. I'll be getting new tires soon, so, maybe that will improve things. But, in the meantime, has anyone else noticed a harshness with coil suspension as the car ages?