If your looking for long tread life the 512s are great at 360 tread wear but there a all season tire witch means some performance will be lost do to all season handeling. I too have a set of 512s 205\50\15s .There not a summer tire thow a summer tire will grip harder coner sharper and have a stiffer feel but the tread life will be lower do to the sticky compounds example azeniz 612s tread wear 200 hope this helps