Tire and road wear particles (TRWP) are tiny particles that are produced by the necessary friction between tires and the road surface, often referred to as abrasion. TRWP have distinct characteristics. They are tiny, elongated particles typically measuring around 100 micrometers. Denser than water, TRWP are a mix of approximately half tire tread material and half road-pavement material.
We are science driven
Since 2005 we’ve supported research into the potential human health and environmental impacts of tires throughout their lifecycle. We commission independent research with the aim of publishing studies in peer-reviewed scientific journals.
TRWP is a relatively new field of research
Initial research has contributed to help answer questions about the physical and chemical characteristics of TRWP, their behavior in the environment, and their potential risk to human health and the environment.
An evolving scientific understanding
The potential impact of TRWP on human health is a complex issue that is still being examined. We recognize that this is an evolving area of research and, as an industry, fully supports ongoing peer-reviewed studies that advance understanding of this subject.
Specifically, studies into airborne TRWP have concluded that TRWP make a low contribution to particulate matter of the size fractions of most concern to human health. Additionally, inhalation studies suggest that TRWP is unlikely to pose risk to humans through airborne exposure.
To improve scientific understanding of potential human exposure to TRWP, TIP‘s ongoing and planned research includes topics around sampling of TRWP in the environment and studying its degradation.
Discover more about our efforts to further scientific understanding of TRWP and promote mitigation action at www.tireparticles.info