To most people, metal is already hard enough. But then again, most people aren’t GMC engineers. They went deeper, and got to thinking about metal hard enough to break down the earth’s bedrock. That was our inspiration to use a similar hardening process for the rotors on the 2014 Sierra. It helps them last twice as long. It was so incredible we patented it. Learn more: http://spr.ly/RotorsG
I work for General Motors at their Technical Center in Warren, Michigan and would like some respect. We love what we do and try our best to create useful products for everyone. These new DuraLife rotors were not offered on last years models. Instead of judging on preconceived notions, I challenge you to go out and test one of our new products! I believe in our products and I think you'll like them too. .
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