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Optical Properties and Direct Radiative Forcing of Airborne Tire Wear Particles
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Every time tires roll on the road, they shed tiny plastic particles that float into the air we breathe, and this study found these particles actually absorb sunlight, meaning they may contribute to warming the atmosphere, similar to soot from car exhaust. While this research focused on climate effects rather than direct health impacts, it adds to growing evidence that tire wear particles are a significant, overlooked source of airborne micro- and nanoplastics that we're constantly inhaling. Since these particles are already known to be a health concern, understanding their environmental behavior is an important piece of the bigger picture on plastic pollution's reach.
Tire wear particles (TWPs), an emerging anthropogenic micro- and nanoplastic aerosol, are carbon-containing and light-absorbing. Yet the radiative forcing of TWPs has been difficult to assess due to the lack of optical property data. Here, our calculations based on valence electron energy loss...
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Contribution of Road Vehicle Tyre Wear to Microplastics and Ambient Air Pollution
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This review finds that tire wear from road vehicles contributes one-third to one-half of all microplastics released unintentionally into the environment, with passenger cars generating about 110 milligrams per kilometer driven. Most tire particles end up in soil, but a portion becomes airborne, contributing 5-30% of road transport particulate matter emissions. Since the smallest tire particles can be inhaled, this is a significant and often overlooked source of daily microplastic exposure for people living near roads.
Microplastic and Associated Black Particles From Road‐Tire Wear: Implications for Radiative Effects Across the Cryosphere and in the Atmosphere
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Researchers analyzed atmospherically deposited particles on snow surfaces at high elevations in the Colorado Rocky Mountains and found black substances associated with microplastic fibers originating from tire wear. These particles contain carbon black, a light-absorbing additive, which may accelerate snowmelt by absorbing solar radiation similarly to black carbon soot. The study suggests that airborne tire-wear microplastics could contribute roughly 10% additional radiative forcing in snow-covered regions, with implications for water resources.
The Importance of Tire Wear Particles for Atmospheric Ice Nucleation
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Every time you drive, your tires shed tiny plastic particles into the air—and this study found these particles are surprisingly good at helping clouds form ice, far more so than other types of microplastic pollution. This matters because as car ownership grows worldwide, these tire particles could increasingly influence weather and climate patterns, on top of already being a pollutant we breathe in.
Mechanism of microplastic and nanoplastic emission from tire wear
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Scientists showed that normal tire wear produces two distinct populations of plastic particles: smaller airborne nanoplastics that stay suspended in the air, and larger microplastics that settle to the ground. Nanoplastic emissions increase dramatically with vehicle speed and weight, and electric charge keeps the smallest particles floating in the air where they can be inhaled. This research identifies tire wear as a major and previously underappreciated source of breathable nanoplastic pollution.
Vehicle tyres - A key source of microplastics to the environment: Fate, effects, and mitigation strategies
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Every time your car tires touch the road, they shed tiny plastic particles that end up in our air, water, and soil, making tires one of the biggest sources of microplastics in the environment. This review pulls together existing research on where this tire dust ends up and how it affects living things, and while more research is still needed on human health risks, it's a reminder that even routine driving contributes to the plastic pollution we're increasingly breathing in and consuming.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.