ESSEN, Germany—Evonik's Ultrasil 7800 GR, a silica with a customized surface area that meets the demands of SUV and all-season tires, is the next step in innovation for green tires, according to an Evonik release.
The challenge for SUV tires is to give the tires sufficient stiffness in spite of their size, said Hark-Oluf Asbahr, marketing of rubber silica for Evonik.
"With Ultrasil 7800 GR, we managed to find the right mix to combine joy of driving, road safety and resource efficiency in a single product," he said.
Evonik said the new product meets a balance of maximum grip and minimal rolling resistance in large-surface tires as well as tires with high mileage requirements, such as all-season tires. The specific surface area of Ultrasil 7800 GR is increased, compared to Ultrasil 7000, and the product reinforces the tread compound and gives tires sufficient stiffness.
Asbahr said the direct feedback between the tire and the steering system results in significantly greater safety, including in the case of short and wet braking paths.