Just noticed that the springs are not compatible with D models ... wonder why?
Model S Lowering Springs $499.00 Per Set
Our Model S Lowering Springs improve the ride quality of the Tesla Model S by lowering the ride height by approximately 1″ (25.4mm) and improves handling for spirited enthusiasts and style minded drivers. Our Model S Lowering Springs are for Model S owners without the “Smart Air Suspension” option. Application: 85 and 90 only. Our lowering springs are incompatible with 60, 70, 70D, 85D and 90D.