from what i read about 1,500 to 3K miles, I to was in the same boat needing rear tires, i decided why spend $100 for a street tire when for another $50 i could get a drag radial, way better traction, it it will last just as long as a street tire driven hard, my bfg t/a were shot with about 8K. i went with the Nittos they are said to last longer about 12 to 15K but some say they don't hook as hard. i wasn't going for the last tenth.