I don't have this problem on the front but the rear is a major problem for me. Even more so than some others I think as I seem to rip my tires more.
We use 571 for the front and 575 for the rear till around a track temperature of 25 degrees celcius where we then would switch to 572's. I found that repairing the tear as it starts with CA glue does the trick. They do rip again later on but I found that by the time they rip again they are due for a change anyway. Though the 575s do wear fairly quick. Just got onto my 3rd set. and I race weekly.