Also note that both Yakima and Thule also provide roof rack fits for the Model S.
Yakima for Panoramic roof fit points:
Control Tower (#8000214)
58" Crossbars ((#8000409)
Landing Pad 11 (#8000233)
Thule for Panoramic roof fit points:
AeroBlade
Thule Rapid Podium Foot Pack 460R
Thule AeroBlade load Bar Pair ARB53
Thule Fit Kit KIT3130
Traditional (my preference)
Thule Podium Foot Pack 460
Thule 58 Load Bar Pair LB58
Thule Fit Kit KIT3130
Pleas verify this information before you purchase these items. I much prefer the standard load bars to the 'aero' variety. I have no affiliation with Thule, or Yakima other than I own a Thule rack, and love it.
www.thule.com
www.yakima.com
Both have Tesla Model S in their fit guides. Thule has the 2014 Model X in their guide, but no fit!