Metal spews from tires and brake pads

By Sarah Webb, 15:57 PM April 15, 2008

As well as tailpipe emissions, cars and other vehicles throw off metal pollutants from wear on various parts. Despite European regulations requiring cleaner materials in vehicles, a study in Stockholm shows that tires are a significant source of cadmium, while brake pads emit a variety of other metals.

Bo Bergbäck and his colleagues at the University of Kalmar in Sweden analyzed metals in tires and brake-pad linings. They used average wear and replacement patterns for the parts, along with na...

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