There is a statement only for Launch Mode for Insane/Insane+ or Ludicrous/Ludicrous+ mode to set the suspension to Low or Very Low with no explanation. The reason is the new suspension puts too much strain on the drive train because of the axle angles when the suspension is raised. The smoother ride comes a high cost to convenience and concern, especially when passing another vehicle or just having a little fun. My Model S P85DL obviously has a different suspension, but never had this problem, even after 74,300 miles. The loaner Signature Model X P90DL also did not exhibit this problem. In my judgment the engineers made a bad choice in the trade space in the new design, leaning too much toward a slightly smoother ride.
When I received my car at delivery, it was set to Standard, and there was no briefing or verbal warning about acceleration. From the first time I accelerated hard for 2 seconds (not even full Ludicrous mode and definitely not a launch) I noticed a vibration with only 8 miles on the car. As time went on I noticed it was there even with normal acceleration, and worst with stronger acceleration. The front axles were replaced. On a test drive the service tech broke a motor mount, which gives you a clue how serious this is. I received my car back with a verbal warning "from the engineers" to not accelerate hard uncles the suspension was set to Low or Very Low. This is expanded from the users manual procedure. To say I'm disappointed with Tesla, after owing a Roadster 2.5 and a performance Model S, is an understatement.