It's all in the installation procedure - do your homework, ask questions and you'll find out that there is a significant difference between the installation method BMW uses and the one most after market autoglass installers use. I had my BMW windshield glass installed by my dealer several years ago and the BMW procedure required that they kept the car overnight (12 hrs), with two straps and foam blocks holding the windshield in place against the frame, because the bond between the glass and the adhesives used needed to "set" (slow curing). All in the name of safety and quality! Unlike the fast curing epoxies most aftermarket installers use. Using fast curing epoxies invariably leads to leaks over time (6 to 12 months down the road). Try having water damaged electronics covered by your insurance ...

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PAX5
BMW CCA #20645