To those who plan to order a Model S with 21" alloy wheels in San Francisco Bay Area, may I offer you this unique opportunity to this set of 21" Silver Tesla Arachnid forged wheel set which is much lighter and unique, for the same price as your wheel upgrade option. Please PM me for details if interested. Admin: This post is to offer an wheel upgrade opportunity to those who plan or is taking delivery of a a MS order. If you believe this belongs to a different forum, please update this accordingly. Thanks.