I received my P3D without performance package at the end of July. When parked next to RWD cars at the delivery center, it was pretty obvious that my car was lowered slightly (when I ordered it, the performance upgrade package did not list lowered suspension as an upgrade). I'd be curious what other people's ride height measurements are, especially the P3D+. I measured from the top of the fender/wheel well to the ground as well as to the center of the cap (to eliminate differences in tire diameter). Here's what I got - note I'm including all 4 wheels b/c there's a 1/4" variation; sad!
RF (right front): 15 3/4" to center of cap; 28 1/4" to ground
LF: 15 5/8" to center of cap; 28" to ground
RR: 15 3/4" to center of cap; 28 1/4" to ground
LR: 15 7/8" to center of cap; 28 3/8" to ground
(example picture attached for how I measured to the cap)
RF (right front): 15 3/4" to center of cap; 28 1/4" to ground
LF: 15 5/8" to center of cap; 28" to ground
RR: 15 3/4" to center of cap; 28 1/4" to ground
LR: 15 7/8" to center of cap; 28 3/8" to ground
(example picture attached for how I measured to the cap)