Goodyear launches silica-containing tyres

The tyre is being launched this month in Latin American markets and will be introduced in other regions within the next year.

For more than a decade, Goodyear researchers worked with PPG Industries to examine the effects of chemically treated silica on tyre performance. The goal was to further improve rolling resistance without have a detrimental effect on traction in wet conditions. In Goodyear's new EffcientGrip SUV tyre, this next generation silica was used in a new tread compound and a new tread pattern to provide both improved rolling resistance and improved wet traction.

"Our customers around the world are demanding more fuel-efficient tyres, but they want us to minimise the typical trade-offs," said David Zanzig, director of Global Materials Science for Goodyear. "Our materials scientists worked in cross-functional teams and, together with tyre design and construction engineers, they derived an integrated solution that optimises performance. This new silica plays a critical role in satisfying our customers' needs."

Lower rolling resistance

Silica is used as a reinforcing agent in tyre tread compounds. Compared to carbon black, a traditional reinforcing agent for tyres, silica reduces rolling resistance. Lower rolling resistance, in turn, improves a car's fuel economy.

In addition, this new silica - marketed by PPG Industries as AGILON performance silica - has been shown to have processing advantages that also benefit the environment. Since it is easier to mix into compounds, factories can consume less energy in the tyre production process and lessen emissions.

In its efforts to create more environmentally friendly tyres, Goodyear has been exploring its options with silica. Last year, Goodyear reached supply agreements to purchase silica derived from the ash left behind after rice husks are incinerated.

"While no one source of these new sources of silica are able to fulfil our total demand, they each play an important part in our materials line-up as we strive to create more environmentally friendly tyres," said Zanzig.