After my wife had our first child, I got tired of cutting and avoiding close collisions. I bought these rotors to make my daughter's layover safer and I'm glad I did. The stopping power of these brakes combined with Greenstuff's EBC brakes makes a world of difference. While my reactions aren't the fastest when someone crashes into my lane, these things make up for it. As soon as I have to replace them, I'll probably buy new ones. They are a perfect replacement for the 2005 front GMC 1500 rotor.