I don't know what your budget is, but you might want to look at a set of custom wheels from Signature or BC wheels. I would say reach out to Jamie
@SignatureSales and talk to him before you buy. FYI - I have absolutely no financial relationship with him, just a satisfied customer and I just ordered my second set of Signature wheels.
The reason why I suggest speaking with Jamie he is one of the few vendors I've seen that can set you up with a set of squared wheels for the refreshed S where you can actually rotate the wheels front to rear, not just dismounting the tires that are the same size and swapping them around on the wheels. Honestly if I had to do that, I likely wouldn't bother with square wheels.
I just ordered a 20" square set to go with my track pack brakes. I would also put some thought into rim width. One of the most common square setups out there by forum members is 285/35/20's on 10" rims. I personally don't like how much Tesla tends to stretch the tire on rims and I'd rather not be using the maximum width rim for a given tire. I like just a bit of extra sidewall to reduce the risk of curbing the wheel and a bit better ride comfort.
If you have an MS LR, you could probably get by with less tire than my Plaid. As Anson mentioned the launch is so soft on this car traction off the line is unlikely to be an issue. I can tell that my LR never spun the tires on dry pavement, no matter what I did. So 285/295s are probably costing you efficiency for no real benefit other than looks.
I plan to run 295/35/20 for my Plaid in a square setup. At least that is my plan.
It may change by the time my wheels show up and I may be at 285/35/20.
A huge benefit to a square setup is tire warranty. Almost all manufacturers have your tire warranty if you are running a staggered setup. So based on how my Plaid eats tires, if I can invoke the treadwear warranty a few times, it might just pay for my wheels...
I am on my second set of rears in 5k miles. That was mostly due to camber but I don't expect a set to last more than 10k looking at my fronts.