I just had a set of MPP Comfort Adjustable coilovers installed on my 2021 AWD LR model Y, picked it up Thursday during a snowstorm and had an hour long drive home. Initial thoughts were that it was a bit smoother, more controlled but not a huge leap in overall comfort. Another drive today for an hour or so around town, and I thought I'd give it a small adjustment to 12/10 in the rear to see if it improved things, as it seems many people choose that setting. I had asked the shop to set everything to 12. Imagine my surprise when I found the rear rebound was set to maybe 3 or 4! Uh oh, check the rear compression, also set really stiff. Time to check everything I guess, and they were all set somewhere between 3-7. I think the shop must have thought I meant set them to 12 from full soft, not from full stiff. So I set my fronts to 12/12 and rear to 12/10 from full stiff and took another drive.
Revolutionary! I thought initially that the new parts were a little better, but clearly there are limits to what you can do with such a heavy car short of changing geometry etc. I was wrong. The problem was the shocks were set really stiff, and not the same values at each corner from what I felt. Setting everything correctly made the ride so much smoother and composed, many smaller bumps, small potholes and sunken manhole covers almost completely disappeared. Frost heaves and wide cracks that used to cause the car to porpoise front to rear are must more controlled, and less intrusive. That's probably the worst part of the stock suspension is that bucking back and forth feeling, and it is so much better already. Larger bumps are still felt but it doesn't feel like the whole car crashes and shudders over them. The ride still feels pretty sporty and grippy, a little more body roll, but actually feels a bit lighter on its feet somehow. So far I am really impressed, I can't wait to drive it more to experience the improvements over time.