My 2014 S85 is in service... door handles failed... so Tesla gave me 2017 75D with 5k miles and cloth seats... OMG how comfortable, quiet, solid it is...air suspension is surprisingly stiffer and way more comfortable, cabin is whisper quiet and doors... doors close like a normal car... like a normal luxury car.... not that empty metal can sound... so what changed underneath in between 2014 (pre facelift) and 2017 (facelift) in terms of comfort, noise reduction... any ideas how to achieve same results in my MS? Mine feels very empty, road noise is annoying, wind noise, car feels a bit loose and suspension feels loose as well, usual rattles and squeaks .. air suspension makes so much noise and takes forever to go up or down vs loaner... maybe some parts can be DIY/Retrofitted into 2014 to make it as quiet and comfortable as 2017?