I just went through this and thought I'd share.
I live in Chicago and so need to drive through the snow.
Previously, for my Audi S6 and 2 MB E63s, all AWD, I went w/ all season ties (Michelin Pilot Sport All Season 4 and Continental ExtremeContact DWS06). Storage and 2 visits per year to the tire shop just was a no-go for me. I've got another car I take to the track and so leave the aggressive driving there and don't need the absolute highest performance on the street.
For the (black) MSP I just ordered (EDD 9/2 - 9/22), I didn't like the OEM wheels and so after shopping HRE, Forgeline & Vossen (all monoblock forged), I went w/ Signature Wheel SV104 (as they were about 1/2 the price and I love the look). As others posted, I wasn't able to find an all season tires with the OEM 21'' (perhaps there are some, but I looked at the major players). So, after some research and support from Jamie over at Signature Wheel, I decided to go with 20'' wheels which opens up a bunch more tire options. In the end, after messing w/ tire heights and costs, here's the setup I went with:
- Front: 20 x 9 fit w/ Michelin PSAS4 (255/40/20)
- Rear: 20 x 10.5 fit w/ Michelin PSAS4 (285/35/2)
I expect the cost will be just over, maybe $1.5k, the upgrade from 19'' to 21'' Tesla charges.
Will post pics once installed.
Lemme know if you have any questions.