I thought the second vehicle was fine until last week. Something hit the windshield and left a little nick. The next day while sitting in the car, there was a "pop" sound and the crack ran across the length of the entire windshield. Only way for that to happen is if the windshield was under a lot of stress that could only come from poor installation. During the time of the installation, my daughter made a comment about the installer "jumping up and down" on the vehicle. I thought she was exaggerating...I guess she wasn't.