How did you get Tesla to buy it back?Lol - thinking more about it will answer both since they are related! Buying an MX is like playing lottery. This is my second 2023 because the first one was bought back after issues that couldn't be fixed. Great that it was bought back but so much lost time at service centers and stinky loaners. It also had major panel gaps.
The second one has been perfect - I really cannot find anything with it and I have car-OCD. Of course, except the reason I started this thread. So I did get another MX in the same year but I had thought the vibrations I was experiencing with the first one were because of the 22" wheels it had. They were not.
I also have a Mercedes EQS that is crazy refined and perfectly built with zero issues so far so I have an idea of what a proper large EV CUV/SUV should feel like.
So I would only buy another MXP if these tires work out (or other tires - may try the Pirellis too if these don't work out) but too soon to tell. I won't get into suspension modifications though, I don't keep cars that long to go deep into modifying and prefer stock. If a car needs any modifications just after buying to be problem free it is not worth buying for me. Tires are just consumables though.
The MXP definetely needs better high performance tires than the Continentals it comes with - they are good at nothing IMO. Performance wise it is a huge difference driving with the new Falkens especially for hard acceleration. So I would buy again if I could go back in time just to feel that. They are a pretty crazy deal anyway. I wish Michelin had the Pilot Sport AS4 in our size to try them too. I had those in my BMW M5 and they were awesome.
I have another service appt (3rd one now) next week to replace half shafts in my 1,000 mile old Model X to see if that fixes seat vibrations.