Tesla Cybertrucks are now being delivered without aerodynamic wheel covers installed, due to the covers causing excessive wear and tear to tires. Tesla is currently redesigning the covers, with a fix coming soon™.
In the last couple days we’ve been hearing some scuttle that Cybertrucks were being delivered without aero wheel covers installed, due to some sort of problem with the covers. Now we know that the covers are causing unusual wear and tear to tire sidewalls, and that Tesla is going to stop delivering Cybertrucks with covers installed as they redesign them to fix the problem.
The Cybertruck has a pretty unique tire and wheel cover layout, with the both of them taking “angular” design cues from the vehicle. The covers have a six-pointed design, and each “point” fits into a recess on the tire sidewall designed to accept it.
But the reason for these wheel covers is not just design, but efficiency. Wheel covers can reduce aerodynamic disturbances by a large amount – think about it, you’ve basically got four turbines running blasting air out the sides of your car, air which would be better served by smoothly sweeping around the car, causing fewer disturbances.
The net effect of this is that cars with wheel covers on them can gain 5-10% more efficiency. Applied to the entire US vehicle fleet, we could probably reduce total US energy consumption (not just automative energy consumption, but overall) by ~1% if every car had wheel covers.
There still needs to be a little air coming through them to help pass over and cool the brakes, though, which is one reason why gas cars have had open spokes on their wheels. This is still necessary with EVs, but less so because EVs use regenerative braking, which means the friction brakes generate less heat and therefore aero covers need fewer “holes” in them than those on cars that use the friction brakes more often.
Because of this, there’s a small gap between the edge of the Cybertruck wheel cover and the tire, in order to allow some air to pass through. But as Cybertruck was nearing production, we saw that gap potentially cause a problem as a wheel cover flew off in traffic, causing potential safety issues for other road users.
But now, Cybertruck wheel covers seem to be too close to the tire, as they are rubbing against the sidewall during operation.
This can be seen in a video from Tsportline, a shop that sells customizations for Tesla vehicles, and explains the issue that has led to Cybertrucks being delivered without wheel covers.
What’s happening is that while driving, tires naturally flex outward at the bottom when contacting the road, and as the sidewall of the tire bulges outward, it contacts the edge of the aero wheel cover, which gradually wears down the tire. The wear is already visible on a car with a couple thousand miles on it, and the video says it has worn down by about 120 thousandths of an inch, which is a pretty massive amount of wear for just “a couple thousand miles,” when tires are meant to last tens of thousands of miles.
The video uses the word “recall,” but that’s not entirely the right word to use, because this isn’t an NHTSA recall. Tesla, for its part, is reportedly calling this a “parts containment pending revision,” and not using the word recall.
But it is something that owners should take action on by removing the aero covers for now until a fix is found. It’s also possible that the problem would be reduced by ensuring that you have well-inflated tires so that they don’t bulge out as much on the bottom while driving (this may not solve the problem – but you, yes you reading this, regardless of whether you have a Cybertruck, should check your tire pressures anyway because improper tire pressure is another thing that can reduce your range by ~10%, in gas cars as well).
The good news is that the sidewall isn’t as safety-critical as the tread of the tire, since it’s not contacting the road, but the sidewall is also thinner than the tread, which means if it gets worn enough to expose the cords of the tire then there could be some real problems. So don’t mess around, and take your wheel covers off until a fix is found.
On the one hand, this isn’t that big of an issue – the cars still operate perfectly fine, and there’s an easy (temporary) fix for owners to just pop the covers off themselves, which can be done by hand.
But on the other hand, there have been a lot of other issues with the Cybertruck launch. It does tend to happen with Tesla launches, which are often rough in the beginning (though my early Model 3 has remained relatively problem-free, minus some early software glitches that have been improved upon dramatically via OTA updates), and the Cybertruck hasn’t been exceptionally bad in that respect.
The common issues of panel fitment have been documented many times online, and videos of stranded Cybertrucks are making the rounds. These sorts of videos are somewhat to be expected given the Cybertruck’s status as a vehicle that, no matter where it goes, is constantly being filmed, making it likely that any problem about it will blow up into a viral post.
But it still would be nice to have solved these issues before delivery – because we did know there were issues with the wheel covers, and because wheel covers are really important for efficiency, and I personally would love to see them become more accepted and more common on vehicles for that reason.
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The new John Deere Z370RS Electric ZTrak zero turn electric riding mower promises all the power and performance Deere’s customers have come to expect from its quiet, maintenance-free electric offerings – but with an all new twist: removable batteries.
The latest residential ZT electric mower from John Deere features a 42″ AccelDeep mower deck for broad, capable cuts through up to 1.25 acres of lawn per charge, which is about what you’d expect from the current generation of battery-powered Deeres – but this is where the new Z370RS Electric ZTrak comes into its own.
Flip the lid behind the comfortably padded yellow seat and you’ll be greeted by six (6!) 56V ARC Lithium batteries from electric outdoor brand EGO. Those removable batteries can be swapped out of the Z370RS for fresh ones in seconds, getting you back to work in less time than it takes to gravity pour a tank of gas.
When John Deere launched the first Z370R, Peter Johnson wrote that electrifying lawn equipment needs to be a priority, citing EPA data that showed gas-powered lawnmowers making up five percent of the total air pollution in the US (despite covering far less than 5% of the total miles driven on that gas). “Moreover,” he writes, “it takes about 800 million gallons of gasoline each year (with an additional 17 million gallons spilled) to fuel this equipment.”
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Daimler Truck AG CEO Karin Rådström hopped on LinkedIn today and dropped some absolutely wild pro-hydrogen talking points, using words like “emotional” and “inspiring” while making some pretty heady claims about the viability and economics of hydrogen. The rant is doubly embarrassing for another reason: the company’s hydrogen trucks are more than 100 million miles behind Volvo’s electric semis.
UPDATE 22NOV2025: Daimler just delivered five new hydrogen semis for trials.
While it might be hard to imagine why a company as seemingly smart as Daimler Truck AG continues to invest in hydrogen when study after study has shut down its viability as a transport fuel, it makes sense when you consider that the Kuwait Investment Authority (KIA) holds approximately 5% of Daimler and parent company Mercedes’ shares.
That’s not a trivial stake. Indeed, 5% is enough to make KIA one of the few actors with both the access and the motivation to shape conversations about Daimler’s long-term technology bets, and as a major oil-producing country whose economy would undoubtedly take a hit if oil demand plummeted, any future fuel that’s measured molecules instead of electrons isn’t just a concept for the Kuwaiti economy: it’s a lifeline.
In that context, the push to make hydrogen seem like an attractive decarbonization option makes more sense. So, instead of giving Daimler’s hydrogen propaganda team yet another platform to try and convince people that hydrogen might make for a viable transport fuel eventually by giving five Mercedes-Benz GenH2 semi trucks to its customers at Hornbach, Reber Logistik, Teva Germany with its brand ratiopharm, Rhenus, and DHL Supply Chain, I’m just going to re-post Daimler CEO Karin Rådström’s comments from Hydrogen Week.
For some reason – posts about hydrogen always stir up emotions. I think hydrogen (not “instead of” but “in parallel to” electric) plays a role in the decarbonization of heavy duty transport in Europe for three reasons:
If we would go “electric only” we need to get the electric grid to a level where we can build enough charging stations for the 6 million trucks in Europe. It will take many years and be incredibly expensive. A hydrogen infrastructure in parallel will be less expensive and you don’t need a grid connection to build it, putting 2000 H2 stations in Europe is relatively easy.
Europe will rely on import of energy, and it could be transported into Europe from North Africa and Middle East as liquid hydrogen. Better to use that directly as fuel than to make electricity out of it.
Some use cases of our customers are better suited for fuel cells than electric trucks – the fuel cell truck will allow higher payload and longer ranges.
At European Hydrogen Week, I saw firsthand the energy and ambition behind Europe’s net-zero goals. It’s inspiring—but also a wake-up call. We’re not moving fast enough.
What we need:
Large-scale hydrogen production and transport to Europe
A robust refueling network that goes beyond AFIR
And real political support to make it happen – we need smart, efficient regulation that clears the path instead of adding hurdles.
To show what’s possible, we brought our Mercedes-Benz GenH2 to Brussels. From the end of 2026, we’ll deploy a small series of 100 fuel cell trucks to customers.
Let’s build the infrastructure, the momentum, and the partnerships to make zero-emission transport a reality. 🚛 and let’s try to avoid some of the mistakes that we see now while scaling up electric. And let’s stop the debate about “either or”. We need both.
Daimler CEO at European Hydrogen Week; via LinkedIn.
At the risk of sounding “emotional,” Rådström’s claims that building a hydrogen infrastructure in parallel will be less expensive than building an electrical infrastructure, and that “you don’t need a grid connection to build it,” are objectively false.
Next, the claim that, “Europe will rely on import of energy, and it could be transported into Europe from North Africa and Middle East as liquid hydrogen” (emphasis mine), is similarly dubious – especially when faced with the fact that, in 2023, wind and solar already supplied about 27–30% of EU electricity.
Unless, of course, Mercedes’ solid-state batteries don’t work (and she would know more about that than I would, as a mere blogger).
Electrek’s Take
Via Mahle.
As you can imagine, the Karin Rådström post generated quite a few comments at the Electrek watercooler. “Insane to claim that building hydrogen stations would be cheaper than building chargers,” said one fellow writer. “I’m fine with hydrogen for long haul heavy duty, but lying to get us there is idiotic.”
Another comment I liked said, “(Rådström) says that chargers need to be on the grid – you already have a grid, and it’s everywhere!”
At the end of the day, I have to echo the words of one of Mercedes’ storied engineering partners and OEM suppliers, Mahle, whose Chairman, Arnd Franz, who that building out a hydrogen infrastructure won’t be possible without “blue” H made from fossil fuels as recently as last April, and maybe that’s what this is all about: fossil fuel vehicles are where Daimler makes its biggest profits (for now), and muddying the waters and playing up this idea that we’re in some sort of “messy middle” transition makes it just easy enough for a reluctant fleet manager to say, “maybe next time” when it comes to EVs.
We, and the planet, will suffer for such cowardice – but maybe that’s too much malicious intent to ascribe to Ms. Rådström. Maybe this is just a simple “Hanlon’s razor” scenario and there’s nothing much else to read into it.
Let us know what you think of Rådström’s pro-hydrogen comments, and whether or not Daimler’s shareholders should be concerned about the quality of the research behind their CEO’s public posts, in the comments section at the bottom of the page.
SOURCE | IMAGES: Karin Rådström, via LinkedIn.
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Audi embraced its future in China with the launch of a new Chinese market electric sub-brand called AUDI that ditched the iconic “four rings” logo in favor of four capital letters – but one thing this latest concept hasn’t ditched is the brand’s traditionally teutonic long-roof design language.
Co-developed with Audi’s Chinese production partner, SAIC, the all-new AUDI E SUV concept is based on the PPE (Premium Platform Electric) skateboard, and is only the second model introduced by the company’s domestic sub-brand — which was all-new itself just one year ago.
“The AUDI E SUV concept celebrates the new AUDI brand’s first anniversary following the E concept’s debut in Guangzhou (2024),” said Fermín Soneira, CEO of the Audi and SAIC cooperation, at the E SUV’s unveiling. “It showcases an unmistakable AUDI design language that gives the SUV a prestigious, progressive stance — with no compromise between sporty aesthetics and interior roominess or versatility. This concept embodies our vision for premium electric mobility by fusing Audi’s engineering heritage with digital innovation to fulfill our commitment in China.”
As a vehicle, the AUDI E SUV concept promises to handle “like an Audi,” and is powered by a pair of electric motors good for a combined 500 kW (~670 hp), good enough to get the big crossover from 0-100 km/h (62 mph) in about five seconds. Those efficient motors are fed electrons by a 109 kWh battery riding on AUDI’s 800V Advanced Digital Platform system architecture, and can allegedly add 320 km (~200 miles) of range in under 10 minutes at a high-powered DC fast charging station.
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If you’re a fan of self-driving tech, the AUDI 360 Driving Assist System is the AUDI E SUV concept is for you, with features that, “enable a relaxed and safe driving experience – on highways, in dense city traffic, and during assisted parking.”
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