I went to 38 cold psi and it helped the firm ride, but not as much as I wish. The only thing I don't like about my 2021 Y is the suspension. I'm hoping Tesla will come out with an upgrade package with AVS.I thought my 2021 MY was a little bit to firm and discovered the cold tire pressures were 43psi all around. For local driving, I reduced the pressures to 40psi and seems much less firm riding. I may even experiment with 38 or 39 psi. Of course with longer road trips where range is more of an issue, I’ll bump them back to 42.