Zoned tread for racing tires

US9776456B2 · kind B2 · utility

Assignee

• The Goodyear Tire & Rubber Company · US

Inventors

• Paul Harry Sandstrom · Tallmadge, US
• Andrew Frederick Weimer · Akron, US
• Richard Barkley Campbell · Massillon, US
• Thomas Charles Lippello, III · Fairlawn, US
• Mark Alan Keto · Ravenna, US
• Larry Alan Kraus · Uniontown, US
• Steven Wayne Cronin · Akron, US

Key dates

• Filing date: Jan 19, 2011
• Grant date: Oct 3, 2017
• Expiry date: Feb 26, 2033

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60C2011/0033
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A racing tire comprising a tread having a new tread thickness of no greater than about 0.375 inch. The tread defines a running surface that includes a first circumferential portion of a first rubber compound and a second circumferential portion of a second rubber compound situated adjacent one another. The first rubber compound has a greater stiffness than the second rubber compound so as to provide the tread with greater wear resistance along the first circumferential portion, and the second rubber compound provides the tread with greater traction along the second circumferential portion. The tread may be substantially free of a tread pattern. The second rubber compound may have a greater DIN abrasion value than the first rubber compound. The second rubber compound may have a higher tan delta at 100° C. and/or a higher J″ traction value than the first rubber compound.