I know this has been posted before, but the previous posts aren't helping me. I just test drove a P85 and a P85+ today. The P85 had standard suspension (not air) and the P85+ had the air. I am considering a Model S as my next car. The lease on my 2011 BMW M3 is up soon. I cannot for the life of me feel *a major difference* between these two cars. I can feel a little more body roll in the P85 than I can from the P85+ but the standard suspension in the P85 feels more like my BMW than the P85+ does. The P85+ feel floaty to me with the air suspension. A little about me: I have an M3 and have for 3 years. I don't often track this car, but have. I had an E60 550i M Sport for 3 years before that so I would consider myself comfortable and used to high performing BMW cars. Without driving a Model S at a track, which I cannot see myself doing, can anyone tell me how I should be feeling the differences between the two cars? Both have the same accel, I can feel that. The P85 with standard suspension has more road feel to me than the P85+ with air. I can't tell really any difference in the steering feel. I can tell there is a bit more body roll, but coming from any BMW the Model S feels like a tank. Perhaps it's just the really short amount of time that I've been able to spend with this car, but I'm really struggling to justify an extra 10k on an already expensive Model S for this upgrade. Overall I feel like the P85+ is really kinda of a "but this goes to 11" option. I am seriously impressed with the Model S overall the the accel in this thing knocked my socks off. Its an excellent car. Help me? Many thanks!