2-day report:
Height: It's definitely low. Having lowered many cars, I felt a 1" drop with this much fender gap would be pretty modest, but it definitely seems more aggressive than on other cars. Fundamentally, I feel it's not that the Tesla is too high, the designers just botched the body design and created unnecessarily too much fender gap. With such narrow and inset wheels on these, it really makes no sense. Fortunately, despite the now very low car, the very forward front wheel placement and a tapered front bumper angle make for very good clearance on things like speed bumps, driveways, etc. Compared to other sports sedans, there's a very good approach angle on this car (to speak 4x4 terms). Contrarily, my previous car had a huge CF front lip that was way out in front of the front wheels (ATS-V with Carbon Pkg), and at stock height I ran into issues with driveways, car wash rails, etc. I don't have that here.
The lowest part of the Tesla is just in front of the rear wheels. The plastic/side-skirt moves down just before the rear wheel, the only time I heard anything was when that area briefly contacted a driveway angle, but after inspecting, there was no visual scratching, and it is plastic anyways and wouldn't be visual unless you have a major event. Fortunately, this area is considerably lower than the batteries which are much higher and not at risk of damage. In fact, the entire surrounding skirt around the wheel area provides a good safety margins for batteries when it comes to driveways, speedbumps, etc. Here's a picture of the area, but you can see it almost has a tail of black plastic that is notably lower than the rest of the black plastic (and painted side). It's hard to see in the picture, but I basically outlined the shape. This is going to be the area that touches first, which if anything touched, this would be the most favorable spot considering the materials.
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You definitely feel closer to the ground, and when parked, it looks like a very low car. It definitely makes it look like a more purpose built sports sedan versus a commuter luxury car. Stance wise, it's Audi A6 to Audi RS6.
Ride: It's definitely stiffer, you do feel more particularly in parking lots. Speed bumps end very solidly. If you push down on the trunk, there's very little play (I didn't test this before the springs). You can definitely feel it being stiffer around parking lots, speed bumps, etc. It's not necessarily worse, it's just personal preference on whether you want that firm pop over speed bumps or a cushier Cadillac like ride. I feel it is more M3/ATS-V now than before, which is fine with me. On the highway/road at speed, it's not noticeable. I've not seen any bouncing or other effects. Finally, I always felt the Model 3 suspension was noisy and a bit clunky. It's too early to tell, but it's definitely not worse with this, perhaps even better, but that's probably placebo, regardless I wish the entire suspension setup of these stock was quieter.
Handling: Side to side body roll might be slightly better, but it more or less feels the same. I feel sway bars are needed to really tighten this up. Turn-in and lean feel more or less the same, marginally better, but it's not night and day like lowering a Honda Civic. That said, the stock performance springs already were pretty stiff. At the limit where the springs' progression can come in, I have no doubt it's better, but for normal or even mildly spirited driving, it more or less feels the same.
As most have already stated, this is mostly an aesthetic mod. I personally felt the P3D with PUP looked hideous with cross-over level fender gap. It drove me nuts. I was always telling my wife the car just looked too average, this coming from cars that have fairly aggressive looks from their counterparts (BMW M3s, Audi RS4, ATS-V with Carbon). This drop definitely resolves that. However, it's definitely lower than I expected, but given the geometry of the car and the particularly forward placed front wheels, it's easy to navigate driveways and speed bumps at the same speeds you did before.
While many comment on the reverse rake, it's definitely not reversed raked, but it certainly doesn't provide that raked look either. Personally, I feel Tesla's clean and flowing body lines and the lack of a wider rear end/fenders don't really suit a rake.
Rake: There's a lot of comments on the rake. Many pictures (mine included above) are taken with springs and other stuff in the back. I also had a forty pound electric scooter and a suitcase in the trunk. The fender height above the wheel measures to more or less the same at 27.25". I also took multiple pictures of measurements at various key points with the floor, as you can see the body parts towards to rear of the car actually are higher. So it's not a reverse rake, but if I were Eibach, I would've probably lowered the car a bit less in the rear, maybe .2" less, however, you'd have more of that ugly fender gap. I'd love to hear their justifications though.
Car:
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In front of front wheel (~5.5" where paint ends):
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Behind front wheel (~5.75" where the paint ends):
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In front of rear wheel (~5.9" where paint ends):
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Behind Rear Wheel (~7.5" where the paint ends):
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So from the body kit, lowest body parts, it's actually raked, 5.5", 5.75", 6", 7.5")
Here are some lines for reference (not crazy scientific, just approximates. I was limited by the angle due to room in my garage, but the photo was taken level as based on the foundation line on the backwall.
While the fenders are basically level (or even slightly raked), the whole shape of the car has a ton of rake in it, and you can even see that the rear fender appears slightly higher visually. Every line on the car from the window sills, to the door cut, to the body skirts to the door line are very raked up. That said, I'd probably have raised the rear slightly mostly to help with the low clearance piece in front, but as stated, this is not a car that would look well in a rake (like a BMW M3). So while not "raked" from a height standpoint, the body style is raked naturally and technically speaking, the car is somewhat raked based on body kit and even possibly at the fender (but it's more or less even).
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I think it's sort of Tesla design language not to have suspension raking, even the P100D with air is more of a flush and streamlined look than a bulldog attack-mode rake:
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