Pirelli says its new aero tyre is the fastest in the world – without sacrificing rolling resistance or grip 

Pirelli has launched the new P Zero Race TLR SL-R, a tyre claimed to be up to 15 watts faster than the P Zero Race TLR RS used by Mathieu van der Poel.

Using new patented PAAS (Pirelli Advanced Aerodynamic System) tech, this sees a ‘spoiler’ built onto the lower sidewall of the tyre, which decreases the effective inward depression caused when fitted to a rim.

PAAS is the result of a research project in which the interaction between tyre and rim was studied to improve airflow efficiency over the tyre and outer wheel rim.

Pirelli says the P Zero Race TLR SL-R is the most aerodynamically efficient tyre in the world across a +/- 20-degree yaw range, without sacrificing rolling resistance or grip.

Inspired by the P Zero Race TLR RS

Pirelli P-Zero Race TLR SL-R tyre
The new tyre is claimed to save up to 15 watts compared to the P Zero Race TLR RS. Road Bike Connection Spring – Rupert Fowler

The P Zero Race TLR SL-R can be thought of as an evolution of the brand’s P Zero Race TLR RS lightweight race tyre, which until now has been used by its sponsored pros, including Mathieu van der Poel and Mads Pedersen.

It uses the same SmartEVO 2 compound, which Pirelli says is based on motorsport-developed polymers, and a 120 TPI (threads-per-inch) carcass construction. Pirelli says this offers high levels of suppleness and grip in both wet and dry conditions.

The tyre is also said to maintain aerodynamic performance consistently as it wears and is compatible with wide-profile rims.

Pirelli P-Zero Race TLR SL-R tyre
Pirelli says the new tyre features the same construction as the RS tyre under the skin. Road Bike Connection Spring – Rupert Fowler

Pirelli claims the SL-R also improves rolling efficiency compared to the RS, delivering around a 10% reduction in rolling resistance according to its own testing (equating to roughly 2 watts per set).

Where pro teams differ is in their usual choice of tyre size. According to Carlo Di Clemente, Pirelli’s road and gravel product manager, van der Poel’s Alpecin team will usually opt for a 30mm tyre to better match the team’s Shimano wheels, while Pedersen’s Lidl-Trek team’s Bontrager rims are best suited to 28mm tyres.

Accordingly, the P Zero Race TLR SL-R is available in both sizes at launch, while a 32mm version is set to follow later in 2026. Pirelli says the 28mm version weighs a claimed 275g, making it the lightest tyre in the current P Zero Race TLR range. We’ve weighed our test tyres at 288g apiece, in a 28mm size.

The P Zero Race TLR SL-R will be offered in Black-Silver and Black Team Edition colour options, costing £94.99 / $127.90 / €99.90 each. The Team Edition will cost £99.99 in the UK.

How does PAAS make the P Zero Race TLR SL-R faster?

Pirelli PAAS wind
Pirelli says it has tested prototype tyres ranging from 28-35mm wide. Pirelli

The PAAS research project is said to have taken 18 months, incorporating CFD simulations, lab testing, road testing and wind-tunnel validation, with four different wind tunnels used across 10 test sessions.

Put simply, PAAS is intended to keep air attached to the tyre and rim for longer across the typical +/- 20-degree range of yaw angles cyclists are exposed to most often. Pirelli says the system is also designed to enhance the so-called ‘sailing effect’, where aerodynamic lift generated at yaw can contribute a small forward force, reducing overall resistance.

In normal circumstances, a typical bike tyre will exhibit a lightbulb effect, whereby the rim grips to the tyre bead and the tyre’s sidewall expands outwards under pressure. According to Pirelli, this can encourage airflow separation at the tyre–rim interface, increasing drag.

Pirelli P-Zero Race TLR SL-R
Pirelli says the SL-R is significantly faster than the existing RS race tyre. Pirelli

Alongside this ‘standard’ tyre profile, Pirelli says it has tested other tyre-profile solutions it has observed from rivals, including a narrow tyre, a pointy tyre and a vortex-generating tyre (such as the Continental Aero 111 front tyre).

Pirelli says the PAAS ‘geometry construction’ optimises the position of the tyre’s maximum width and smooths the transition between tyre and rim, helping to reduce airflow detachment – and therefore drag.

This carries a natural small weight penalty given the additional material applied to the tyre’s sidewall, but Pirelli says this is outweighed by the aerodynamic gains made, especially at racing speeds.

Pirelli PAAS wind
The tyre creates a smoother interface with the outer rim wall, but maintains a small gap to aid installation. Pirelli

In testing at 45km/h (where Pirelli used a 60mm-deep hooked rim with a 23mm internal width), a 28mm P Zero Race TLR SL-R produced lower drag by 15 watts at certain yaw angles compared to a same-size P Zero Race TLR RS tyre, with smaller but consistent gains compared to other-brand rivals across a broader range of conditions.

The brand adds that tyres and the front wheel together can account for up to 5% of total aerodynamic drag, underlining the importance of optimising this interaction.

Pirelli says it has applied PAAS to prototype tyres ranging from 28-35mm wide, across a range of contemporary road-racing wheels, and claims PAAS will inform its tyre construction going forward.

LG’s New Laptop Display Can Drop To 1Hz For Major Battery Life Gains

LG's New Laptop Display Can Drop To 1Hz For Major Battery Life Gains
LG Display is on a mission to vastly improve laptop battery life with a new LCD panel equipped with its Oxide 1Hz technology. Now in mass production, this first-of-its-kind panel is capable of dropping down to a 1Hz refresh rate when the screen is static, a tactic that LG claims “dramatically” improves battery life with up to a 48% longer

Linux 7.1 To Overcome Reporting Limitation For Multiple Batteries Per HID Device

A limitation affecting various gaming headsets, graphic tablets, wireless earbuds, multi-device receivers and more with Linux has been not being able to report multiple batteries per HID device. After patches were proposed last year for dealing with the increasingly common scenario these days of having multiple batteries per device, the upcoming Linux 7.1 kernel is set to address this limitation…

Canonical Joins Rust Foundation

BrianFagioli writes: Canonical has joined the Rust Foundation as a Gold Member, signaling a deeper investment in the Rust programming language and its role in modern infrastructure. The company already maintains an up-to-date Rust toolchain for Ubuntu and has begun integrating Rust into parts of its stack, citing memory safety and reliability as key drivers. By joining at a higher tier, Canonical is not just adopting Rust but also stepping closer to its governance and long-term direction. The move also highlights ongoing tensions in Rust’s ecosystem. While Rust can reduce entire classes of bugs, it often depends heavily on external crates, which can introduce complexity and auditing challenges, especially in enterprise environments. Canonical appears aware of that tradeoff and is positioning itself to influence how the ecosystem evolves, as Rust continues to gain traction across Linux and beyond. “As the publisher of Ubuntu, we understand the critical role systems software plays in modern infrastructure, and we see Rust as one of the most important tools for building it securely and reliably. Joining the Rust Foundation at the Gold level allows us to engage more directly in language and ecosystem governance, while continuing to improve the developer experience for Rust on Ubuntu,” said Jon Seager, VP Engineering at Canonical. “Of particular interest to Canonical is the security story behind the Rust package registry, crates.io, and minimizing the number of potentially unknown dependencies required to implement core concerns such as async support, HTTP handling, and cryptography — especially in regulated environments.”


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Additional AMD RDNA 4m GPU Targets Coming: GFX1171 & GFX1172

Back in February AMD engineers introduced a new GFX1170 GPU target in LLVM for their AMDGPU shader compiler and was marked with new “RDNA 4m” branding. It’s part of the GFX11 family associated with RDNA3 but carrying this new “4m” branding. In follow-up commits they made further ISA changes distinguishing it from existing RDNA 3 GPUs. Now there are two more RDNA 4m targets being added…

Denon expands its multi-room speaker lineup with the Home 200, Home 400 and Home 600

If the Sonos app saga still has you down, Denon has three new multi-room speakers that give you some fresh alternatives. The company’s Home 200, Home 400 and Home 600 offer audio flexibility with other HEOS-enabled products. These new devices were also designed so that they blend in with home decor better than most speakers, coming in stone and charcoal color options for that purpose. As you progress up in number, the speakers not only get physically larger, but their sonic output is also more robust.

The Denon Home 200 houses three drivers and three amplifiers for “natural, room-filling sound” in a compact speaker. More specifically, you get two 0.98-inch tweeters and a single 4-inch woofer. The Home 200 looks a kind of like the Sonos Move 2, although Denon’s new compact unit isn’t portable. However, you can use a pair of them for a stereo setup, or connect two 200s to Denon’s Home Sound Bar 550 and Home Subwoofer for a 5.1 home theater system.

Next up is the Home 400, which carries two 0.75-inch tweeters, two 4.5-inch woofers and six amplifiers, in addition to two 1-inch up-firing drivers. Here, Denon says you can expect “a wide, airy soundstage” that provides room-filling audio coverage. What’s more, those upward-facing drivers project sound overhead, so there’s a greater sense of dimensionality and immersion here.

Denon Home 600 speaker
Denon Home 600 speaker
Denon

The Home 600 is the largest speaker in the new trio, with dual 6.5-inch woofers alongside two tweeters, two midrange units and two up-firing drivers. Denon explains that this configuration offers “deep, authoritative bass” that provides more depth in your tunes than other two models.

All three of the new Home speakers have Wi-Fi, Bluetooth USB-C and aux connectivity with the wireless streaming powered by Denon’s HEOS tech. As such, you can connect these Home speakers with up to 64 other HEOS devices — including A/V receivers and Denon’s new DP-500BT turntable — and arrange your audio gear in up to 32 different zones. You’ll have access to tunes from Tidal, Amazon Music HD and Qobuz in the HEOS app, and all three new Home speakers support Dolby Atmos Music where available.

The Home 200, Home 400 and Home 600 speakers are available today for $399, $599 and $799 respectively. They’re available from Denon directly or other authorized retailers.

This article originally appeared on Engadget at https://www.engadget.com/audio/speakers/denon-expands-its-multi-room-speaker-lineup-with-the-home-200-home-400-and-home-600-080000916.html?src=rss

Cyberattack on a Car Breathalyzer Firm Leaves Drivers Stuck

Last week, hackers launched a cyberattack on an Iowa company called Intoxalock that left some drivers unable to start their court-mandated breathalyzer-equipped cars. Wired reports: Intoxalock, an automotive breathalyzer maker that says it’s used daily by 150,000 drivers across the U.S., last week reported that it had been the target of a cyberattack, resulting in its “systems currently experiencing downtime,” according to an announcement posted to its website. Meanwhile, drivers that use the breathalyzers have reported being stranded due to the devices’ inability to connect to the company’s services. “Our vehicles are giant paperweights right now through no fault of ours,” one wrote on Reddit. “I’m being held accountable at work and feel completely helpless.”

The lockouts appear to be the result of Intoxalock’s breathalyzers needing periodic calibrations that require a connection to the company’s servers. Drivers who are due for a calibration and can’t perform one due to the company’s downtime have been stuck, though the company now states on its website that it’s offering 10-day extensions on those calibrations due to its cybersecurity disruption, as well as towing services in some cases. In the meantime, Intoxalock hasn’t explained what sort of cyberattack it’s facing or whether hackers have obtained any of the company’s user data.


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Advanced (Blivet-gui) on Fedora 44 Server vs Calamares

Blivet GUI is an advanced graphical storage and partition management tool for Fedora, providing a user-friendly interface for the backend storage library used in the Anaconda installer. It acts as a more powerful alternative to GParted, allowing users to create, modify, delete, and encrypt storage devices (LVM, Btrfs, RAID) with a staged, “apply-on-demand” approach.

Trump Administration To Pay French Company $1 Billion To Stop Offshore Wind Farms

An anonymous reader quotes a report from NPR: The Trump administration will pay $1 billion to a French company to walk away from two U.S. offshore wind leases as the administration ramps up its campaign against offshore wind and other renewable energy. TotalEnergies has agreed to what’s essentially a refund of its leases for projects off the coasts of North Carolina and New York, and will invest the money in fossil fuel projects instead, the Department of Interior announced Monday.

The Trump administration has tried to halt offshore wind construction, but federal judges overturned those orders. Environmental groups denounced the TotalEnergies deal as an alternate way to block wind projects. President Donald Trump has gone all in on fossil fuels, which he says is the way to lower costs for families, increase reliability and help the U.S. maintain global leadership in artificial intelligence.

TotalEnergies pledged to not develop any new offshore wind projects in the United States. TotalEnergies CEO Patrick Pouyanne said in a statement that the company renounced offshore wind development in the United States in exchange for the reimbursement of the lease fees, “considering that the development of offshore wind projects is not in the country’s interest.” Pouyanne said the refunded lease fees will finance the construction of a liquefied natural gas plant in Texas and the development of its oil and gas activities, calling it a “more efficient use of capital” in the U.S. After it makes those investments, TotalEnergies will be reimbursed, up to the amount paid in lease purchases for offshore wind, according to the DOI.


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Marblopolis Marble Run Amusement Park

Built by Jelle’s Marble Runs, Marblopolis is a marble run amusement park featuring 30 different attractions, all connected via almost 1/4 mile of track. The park can accommodate up to 400 fun-loving marbles at a time, and, I think I speak for everyone here when I ask, what happens if a 401st visitor shows up? Do all the rides break? If that marble were me, it would probably ride something spinny then puke funnel cake on another marble, who would then puke on another marble, and on and on. Like a domino maze, but a puking marble run.