Given that Tesla only sells the Pirelli Sottozero winter tire, I won't be able to buy from Tesla since in Ottawa, my driving is on local road (non-highway driving) so I need winter tires that are meant for snow covered roads which means Bridgestone Blizzak or Nokian Hakka R2 (the Pirelli are the highest rated for wet/ice conditions but one of the lowest rated for snow covered conditions). I contacted Tesla to see if they would be offering a second option (since there are two main types of winter tires - ice vs snow) and they said there are no plans - but I can buy wheels/sensors from them but they will not put the tires on as they would not Tesla approved tires. So I am unsure what I will do this fall as I will not be using Tesla service so curious to see what others plan to do. In Ottawa, as we have no Tesla store/SC, do the Frisby tire type locations provide good service on Tesla cars? Do X or S owners recommend certain shops in Ottawa who deal with Tesla? Also, does anyone know if the Aero caps fit over generic steel rims - since Tesla will not do the service I am less inclined to buy the wheels from them.