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Nice find. So yes, they are using almost exactly the limits I'd imagined, at least in the rear. And they are getting the associated tire wear. And because Lucid's got more height adjustment the camber gain has to be less, which combined with the fact that the car will roll a lot less (the Rivian...

Short answer is I don't know. Can you link the two tires you're looking at? I did mount PZero Electrics on my Model 3 before I got rid of it so I have experience on those, but I doubt they are the same generation you're looking at. In general summer tires beat all seasons everywhere except when...

One can certainly still have camber gain and the associated issues, but it can’t practically get enough for the largest wheel size to not be substantially better. If it were me I’d probably let camber go positive at the highest ride height, maybe half a degree, then I’d limit camber to perhaps...

Circling back I realize you’re correct: the Gravity essentially must be tuned to work best from a performance perspective on the largest wheels. Because what I said about tuning the suspension to the tires can’t be true for the Gravity, at least in one important way: Back to the physics: the...

Unfortunately good rain performance and low rolling resistance are diametrically opposed. To get good rain performance you want large, deep voids between tread blocks along with soft rubber. But these things both cause tread block squirm, which requires energy. People often complain about how...

Lucid publishes a vehicle height of 1656mm. Do we know what ride height that corresponds to? Our Audi E-Tron GT had height adjustable air suspension. Lowest was 4.9”, highest was 6.5”, only accessible at low speeds. Typically the car stared off around 5.7” and then dropped in stages as speeds...

So this gets a bit tricky. First, coefficient of drag is a derived number. You stick a car in the wind tunnel, measure total drag (which is what counts), divide by the frontal area and then report a coefficient. Two points here: First, if you want to report the lowest CD (which is what people...

Ah… Face palm. The Lucid Gravity is listed as 65.2” tall, used to estimate frontal area. But I highly doubt that’s in the lowest position. If it drops an inch and a half from there on the freeway that’s 4% less drag, explaining much of the Gravity’s on paper efficiency gap vs the Air right off...

Ok, I decided to take a crack at this and put some guesses on paper for posterity… First, based on EPA numbers the gravity appears to be a very efficient vehicle, more than one would expect. According to fuel economy.gov the Air GT gets 512 miles of range on a 118 kWh battery, or more like 505...

Not yet mentioned is drivetrain efficiency. Rolling resistance is linear. Drag increases by speed squared (basically). Power to overcome drag increases to the cube of speed. So a car doing 80 pulls nearly 50% more power from the battery than a car doing 70*. With a perfect driveline power...

The difference between the ideal being 20-80 or 20-55 may be down to chemistry. Teslas, for example, ramp fast charge down rapidly from ~30% onwards, and are pretty slow above 50%. Meanwhile I understand the Gravity will hold nearly full charge to 50%, while our Audi E-Tron GT and Hyundai held...

My guidelines would be a bit different than what's mentioned above. 1. Limit the amount of time the battery spends above 60% if you can. The battery degrades significantly faster when it sits highly charged. Close to 50% is ideal. If you can for example sit overnight at 55-65% and then charge...

So typically cornering response will improve with a shorter sidewall. It helps to have a mental image of how the tread is connected with the rim through the sidewall, and how those things move relative to each-other under load. Below for example you can see the tread isn't rotating on the same...

To nerd out a little… Drag tires are trying to lengthen the tire contact patch with tall sidewall tires run at lower pressures. This does two things: it puts more tire surface area in contact with the road, but more importantly it leaves rubber in contact with the road for longer. Doubling the...

Lol

If I were you I'd probably get 2-3 of something like this upstairs now: https://www.amazon.com/Amazon-Basics-Protection-Oil-Filled-ETL-certified/dp/B07HGFB3FQ/?th=1 You can then consider downstairs later, either with more of the above or with a heat pump. That's where we are in fact, we cut a a...

You can get electric radiant oil filled space heaters for near $50 a pop. We put a few in the bedrooms- silent, puts heat exactly where you need it, easy to keep balanced. Not as efficient as a heat pump in theory (we have that too) but way easier and cheaper, plus no need to figure out your...

Link? Where are you reading that? Are you on gas for home/ water heating or drier? If so you could flip those to electric to bump consumption. Or put your Air on Turo ;).

And I'm saying exceeding that is not a high bar. If that was the standard Lucid was holding themselves to I wouldn't be here. Let's be honest, Lucid is still a startup, with the risks (and bugs) that come with that. I'm here because I think Lucid might not just exceed that standard by a little...

Got it, and it looks like it's got proportional torque? Do we know the rating in lbs feet? Gear ratio is 7:1? If so that says they have headroom to push torque rearwards. Probably brings my 0-60 estimate for the Dream down to 2.6-2.7 seconds and addresses my main concern. Porsche and...