My youngest daughter and I put a dial caliper to each of the tie rods, the toe recently went out and within 8K miles took 3/32 of tread off the inside of a pair of tires. They are all within spec still. So now it's time to find a good alignment tech. A few weeks ago we had to do a crash stop when a policeman decided it was a good time to stop traffic to let some firemen cross the highway. We went from 50 to 0 in less then two car lengths, about 1 and a quarter road stripes. Could that have done it? Tires squeaked a little bit. The Tech-2 knows the tire type, size and air pressure, which I reckon is used to fine tune the ABS.