IREHAWK PV41 Tires by Firestone®. Season: All Season. Type: Performance. This modern tire is specially designed for law enforcement and high-speed emergency use. This V-Speed rated tire combines excellent wet and dry handling with an emphasis on quick steering response. Built for durability, the PV41 gives you good wear without sacrificing ride quality. And, as further endorsement of high performance, it passed the demanding Los Angeles County Sheriff's Department and California Highway Patrol high-speed wear tests.