Just rec'd my S back from Wheel Specialist in Tempe AZ. 22" staggard Zenetti wheels with the new Falken FK453 tires. Thanks to Eric at Zenetti and Darren @ WSI.
I like that. Normally that is not my favorite style of wheel, but it works with the Tesla (at least in that color!)
No, the concave design won't help careless driving... My buddy @ Wheel Specialist informed me that they see a ton of 21" Tesla wheels curbed