Just thinking out loud ...
I'm picking up a new '21 M3P, so it'll have the new 20x9 Übers, and I'd like a little meatier tire than stock. So one option is keeping the OEM wheels and replacing the tires with either a 245/55-20 or possibly a 255/55-20, I'd like to fill in the fenders a little better, get a little more width and sidewall, and for a 9" wide wheel a 245 or 255 is right on spec.
I understand you want to keep the overall height close to OEM - I saw a thread saying 26.0-26.7, and a 255/55 is a touch tall (at 27"), but I also read you can set the wheel spec in the car config to the Tesla performance wheel package (that uses a 245/55-20) and then a 245-255 is either right on, or just slightly above spec (this is probably a discussion for a different thread, unless it's a pretty simple yes/no
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So on topic: if I still want to move the wheels a little further out, and I want to source my own lugs, what are the spacer options. Is there a Tesla fitment for a 5mm, maybe a 7mm? How are the stock lug lengths on a Performance model? Again, without using special shanked lugs or spacers with their own studs.