I questioned the safety of my cars windshield. I had bought this old BMW and could hear air when I drove on the freeway. I checked and the sealing is rotting. My car is too old to take to dealer. So I found this window replacement shop through a friend. I took my baby BMW in and was taken care of for a fair price. They shop went out of the way to do a tedious job. But now I drive down the freeway without the wind sound and feeling safe with my manufacturers windshield.