The article reviews the contribution of road vehicle tire wear to microplastics and ambient air pollution. Tyre particles, generated by shear forces between the tread and the road or by volatilization, are a significant source of microplastics in the environment. The major part of these particles ends up in soil, with a considerable amount released into aquatic environments, and a small percentage becoming airborne. Tyre abrasion contributes to 5–30% of road transport particulate matter (PM) emissions, corresponding to approximately 5% of total ambient PM emissions. The particle mass size distribution peaks at around 20 to 100 μm, with a second peak in the 2–10 μm range. The absolute abrasion levels depend on various factors, including tyre, vehicle, and road characteristics, as well as environmental conditions and driving style. Recent studies have aggregated data to find a mean abrasion of 110 mg/km per vehicle or 68 mg/km/t for passenger cars. PM10 emissions from tyres were found to be 1.4–2.2 mg/km per tyre, while particle number emissions were in the order of 10^10 #/km per tyre. The ratio of PM10 to total abrasion was found to be 2.5% on average, and the ratio of PM2.5 to PM10 was calculated to be around 40%. The article also discusses various mitigation measures for tyre particle pollution, including the limitation of the tyre abrasion rate as proposed by the European Commission for the Euro 7 regulation.The article reviews the contribution of road vehicle tire wear to microplastics and ambient air pollution. Tyre particles, generated by shear forces between the tread and the road or by volatilization, are a significant source of microplastics in the environment. The major part of these particles ends up in soil, with a considerable amount released into aquatic environments, and a small percentage becoming airborne. Tyre abrasion contributes to 5–30% of road transport particulate matter (PM) emissions, corresponding to approximately 5% of total ambient PM emissions. The particle mass size distribution peaks at around 20 to 100 μm, with a second peak in the 2–10 μm range. The absolute abrasion levels depend on various factors, including tyre, vehicle, and road characteristics, as well as environmental conditions and driving style. Recent studies have aggregated data to find a mean abrasion of 110 mg/km per vehicle or 68 mg/km/t for passenger cars. PM10 emissions from tyres were found to be 1.4–2.2 mg/km per tyre, while particle number emissions were in the order of 10^10 #/km per tyre. The ratio of PM10 to total abrasion was found to be 2.5% on average, and the ratio of PM2.5 to PM10 was calculated to be around 40%. The article also discusses various mitigation measures for tyre particle pollution, including the limitation of the tyre abrasion rate as proposed by the European Commission for the Euro 7 regulation.