I have a 2015 LS with 14,000 miles and I'm trying to soften the ride. I feel every detail of the road and hitting a pothole is a horrible jolt. I just went down to 17" wheels and Pirelli tires, but it didn't make much of a difference. Has anyone had any experience/luck softening the ride with aftermarket struts? Are there different springs that can be used? Perhaps progressive rather than linear? Any recommendations?