Replace the original P275/40/R19 Perreli Z rated tires that came on the car after 12,000 miles of normal driving because they were dang near slick on the rear with the Conti Pro Contact. After 15,000 miles, with 3 rotations, tread wear shows just under 8/32 rubber left put of the original 9/32 rubber. Traction is fantastic even in heavy rain at interstate speeds, lots of grip, smooth ride, no whine, great handling tire. V rated tire is fine with me, cause I don't plan to go near the 150 mph rating, but they are solid on the road, along with smooth at 120 mph. Conti Pro has the rim protector bead, with the sealant lining and were my choice even over the "so called recommended" Cooper tire by other Mustang owners who rave about getting 25Kto 30K miles on their Cooper. Me, with early tread wear, I looking to go well past 30K more towards the 40K rating. Best of all a set of 4 was nearly a half the price of the Perreli and nearly $200 less the Cooper. Would recommend to any one and I am Basically not a Continental tire fan other than when I ran Continental on my VW back in the 60s.