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Porsche Taycan wheel and tire size revealed in pre-production prototype sighting
Porsche has stated that one of the Taycan’s primary characteristics will be its capability to be driven hard on the track. In order to do this, the upcoming all-electric four-door would have to be equipped with powerful motors, a well-balanced, hefty battery, and capable, high-performance wheels. It takes some serious rubber, after all, to ensure that the Taycan stays planted on the road when it’s ripping through a closed circuit.
So far, Porsche has kept the Taycan’s tire size secret. Even the camouflaged prototypes of the vehicle that have been deployed across the globe and spotted in numerous countries have mostly been equipped with unmarked tires. Fortunately, St00k, a moderator at TaycanEVForum.com, was recently able to capture a rare image one of the Taycan’s wheels that just happens to be marked.
What the TaycanEVForum.com moderator found was quite surprising. Looking at the Taycan prototypes that are being tested across the globe, it is easy to see that the all-electric vehicle is equipped with massive, wide tires.
As could be seen in the recently-shared photo, the Taycan prototype was equipped with 305/30/ZR21 Goodyear Eagle tires. That’s incredibly wide for a four-door sedan that’s the size of the Taycan, especially considering that the larger Tesla Model S P100D (now dubbed as the Model S Performance), only comes with 265/35/21 rear tires.
These large, wide tires hint at serious track performance for the Taycan. Large wheels such as 305/30/ZR21s, after all, provide exceptional handling for the upcoming all-electric car. This is particularly important for the Taycan, considering that one of its key selling points is its capability to be driven hard for extended periods of time without losing power.
So far, the Tesla Model 3 Performance is the benchmark when it comes to electric four-door sedans that can handle track driving, thanks to its dedicated Track Mode. With this in mind, Porsche would have to dig deep to make sure that the Taycan, which is significantly more expensive than the Model 3 Performance, will feature closed circuit driving capabilities that justify its Model S-level price.
While the Taycan’s 305/30/ZR21 tires confirm that the vehicle will be a monster around the track, the large tires also bring up some concerns about the vehicle’s range and efficiency. Larger, wider tires usually give optimum performance at the cost of range. This could be seen in the Model S, as a pre-“Raven” 100D equipped with 245/45/19 tires was listed with more range than a P100D fitted with 265/35/21 tires.
Hopefully, Porsche could balance the Taycan’s performance with its range well. This would allow the highly-anticipated vehicle to avoid the pitfalls of other premium EVs from European automakers such as Audi and Jaguar, both of whom have released otherwise great electric cars that are, unfortunately, the zero-emissions equivalent of gas-guzzlers.
Watch a preview of the Porsche Taycan’s track capabilities in the video below.
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Tesla Cybercab tests are going on overdrive with production-ready units
Tesla is ramping its real-world tests of the Cybercab, with multiple sightings of the vehicle being reported across social media this week.
Tesla is ramping its real-world tests of the Cybercab, with multiple sightings of the autonomous two-seater being reported across social media this week. Based on videos of the vehicle that have been shared online, it appears that Cybercab tests are underway across multiple states.
Recent Cybercab sightings
Reports of Cybercab tests have ramped this week, with a vehicle that looked like a production-ready prototype being spotted at Apple’s Visitor Center in California. The vehicle in this sighting was interesting as it was equipped with a steering wheel. The vehicle also featured some changes to the design of its brake lights.
The Cybercab was also filmed testing at the Fremont factory’s test track, which also seemed to involve a vehicle that looked production-ready. This also seemed to be the case for a Cybercab that was spotted in Austin, Texas, which happened to be undergoing real-world tests. Overall, these sightings suggest that Cybercab testing is fully underway, and the vehicle is really moving towards production.
Production design all but finalized?
Recently, a near-production-ready Cybercab was showcased at Tesla’s Santana Row showroom in San Jose. The vehicle was equipped with frameless windows, dual windshield wipers, powered butterfly door struts, an extended front splitter, an updated lightbar, new wheel covers, and a license plate bracket. Interior updates include redesigned dash/door panels, refined seats with center cupholders, updated carpet, and what appeared to be improved legroom.
There seems to be a pretty good chance that the Cybercab’s design has been all but finalized, at least considering Elon Musk’s comments at the 2025 Annual Shareholder Meeting. During the event, Musk confirmed that the vehicle will enter production around April 2026, and its production targets will be quite ambitious.
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Tesla gets a win in Sweden as union withdraws potentially “illegal” blockade
As per recent reports, the Vision union’s planned anti-Tesla action might have been illegal.
Swedish union Vision has withdrawn its sympathy blockade against Tesla’s planned service center and showroom in Kalmar. As per recent reports, the Vision union’s planned anti-Tesla action might have been illegal.
Vision’s decision to pull the blockade
Vision announced the blockade in early December, stating that it was targeting the administrative handling of Tesla’s facility permits in Kalmar municipality. The sympathy measure was expected to start Monday, but was formally withdrawn via documents sent to the Mediation Institute and Kalmar Municipality last week.
As noted in a Daggers Arbete report, plans for the strike were ultimately pulled after employer group SKR highlighted potential illegality under the Public Employment Act. Vision stressed its continued backing for the Swedish labor model, though Deputy negotiation manager Oskar Pettersson explained that the Vision union and IF Metall made the decision to cancel the planned strike together.
“We will not continue to challenge the regulations,” Petterson said. “The objection was of a technical nature. We made the assessment together with IF Metall that we were not in a position to challenge the legal assessment of whether we could take this particular action against Tesla. Therefore, we chose to revoke the notice itself.”
The SKR’s warning
Petterson also stated that SKR’s technical objection to the Vision union’s planned anti-Tesla strike framed the protest as an unauthorized act. “It was a legal assessment of the situation. Both for us and for IF Metall, it is important to be clear that we stand for the Swedish model. But we should not continue to challenge the regulations and risk getting judgments that lead nowhere in the application of the regulations,” he said.
Vision ultimately canceled its planned blockade against Tesla on December 9. With Vision’s withdrawal, few obstacles remain for Tesla’s long-planned Kalmar site. A foreign electrical firm completed work this fall, and Tesla’s Careers page currently lists a full-time service manager position based there, signaling an imminent opening.
Tesla Semi Program Director Dan Priestly teased the major improvements to the all-electric Class 8 truck on Thursday night, following the company’s decision to overhaul the design earlier this year.
Priestley said he drove the Semi on Thursday, and the improvements appear to be welcomed by one of the minds behind the project. “Our customers are going to love it,” he concluded.
Just drove the redesigned Semi. Our customers are going to love it. https://t.co/KZ88sf1CDL
— Dan Priestley (@danWpriestley) December 19, 2025
The small detail does not seem like much, but it is coming from someone who has been involved in the development of the truck from A to Z. Priestley has been involved in the Semi program since November 2015 and has slowly worked his way through the ranks, and currently stands as the Director of the program.
Tesla Semi undergoes major redesign as dedicated factory preps for deliveries
Tesla made some major changes to the Semi design as it announced at the 2025 Annual Shareholder Meeting that it changed the look and design to welcome improvements in efficiency.
Initially, Tesla adopted the blade-like light bar for the Semi, similar to the one that is present on the Model Y Premium and the Cybertruck.
Additionally, there are some slight aesthetic changes to help with efficiency, including a redesigned bumper with improved aero channels, a smaller wraparound windshield, and a smoother roofline for better aero performance.
All of these changes came as the company’s Semi Factory, which is located on Gigafactory Nevada’s property, was finishing up construction in preparation for initial production phases, as Tesla is planning to ramp up manufacturing next year. CEO Elon Musk has said the Semi has attracted “ridiculous demand.”
The Semi has already gathered many large companies that have signed up to buy units, including Frito-Lay and PepsiCo., which have been helping Tesla test the vehicle in a pilot program to test range, efficiency, and other important metrics that will be a major selling point.
Tesla will be the Semi’s first user, though, and the truck will help solve some of the company’s logistics needs in the coming years.
Tesla Cybercab tests are going on overdrive with production-ready units
Tesla gets a win in Sweden as union withdraws potentially “illegal” blockade
