That's the other thing I was going to add, recently the car started to feel a bit harsher over bumps / potholes, and I couldn't figure out why. Unrelated to this it occurred to me to check inside front tread depth, and sure enough tread was completely gone on inside edge. I bought two new (used) SuperSports with plenty of tread left and put them on the front, suddenly back to nice bouncy ride over bumps.
So unless I'm imagining it, tread depth also affects ride quality. Especially if theres none left
