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lol. They’ve sold me a few sets of 235/40/18 and 305/30/19s for a ‘69 911 and I’ve never heard of this waiver. It’s a more recent addition, obviously. Frankly I don’t believe the Tire Rack has the info to accurately judge compatible sets for specific cars. It’s great that they (or the...

As to “dangerously” effecting handling at the limit, keep in mind nothing you could possibly do would be as bad as for example replacing just your front tires while keeping worn ones on the back, and people do that all the time (they shouldn’t, but they do). So you’re rolling the dice, it could...

I strongly suspect the miles quoted is simply wrong and that the mid size Michelins do in fact have much more range than is currently quoted. Perhaps that test has yet to be run to to tire availability, etc, but it strains credulity that they just happen to get exactly the same range to the Mike...

If that’s the plan why wouldn’t you simply go with the biggest rims and the OEM tires locally and then buy a set of the smallest rims (maybe takeoffs) for road trips? Lucid specs/ tunes tires for their cars, and I’m a big fan of going with tires tuned for their cars vehicle when possible (as...

Ok I do like that. I was going to say that I’ve personally patched many of these leaks with fix a flat kits, but it’s always a pain in the ass. And the tire goop stuff gets all over the inside of your rims, etc. So this does seem like a real upgrade, even if I have had many tire failures this...

Educated guess: I suspect the PZeros will be a big advantage in at the limit grip and feedback mainly because they are summer tires. Range maybe- they are a very new design, which is a big plus given the rate of EV tire tech improvement, and they have fewer, bigger tread blocks than any...

Overall limit handling. I think they will struggle to get as much camber gain as one would typically put into a performance suspension, and as a result the lower profile tires, which deflect and hence need less total camber, will perform relatively better on the gravity vs cars without height...

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...