The new ET Street S/S - S/S is for street-to-strip - combines R2 drag tire compound with polyester-ply, steel-belted, tubeless radial construction to deliver a combination of dry-traction performance, strength and reliability, according to Stow-based Mickey Thompson , a subsidiary of Cooper Tire & Rubber Co. "This is an exciting addition to our street tire line," said Jason Moulton, product development manager for Mickey Thompson.