The windshield glass on my 2007 335i coupe has deteriorated during the past year, with specks that brightly reflect sunlight and produce intense glare, especially during morning, and late afternoon when the sun is shining on the front of the car. A close and thorough visual examination of the glass surface fails to reveal any pitting or "sandblasting" at all (although that was the primary diagnosis by the dealership mechanic), and the surface feels completely smooth. Do any members know of BMW windshield glass actually degrading with time, possibly due to it being incorrectly tempered? I think that the windshield replacement should be covered under an extension of the warranty. The dealer price for an OEM replacement is $1655, which seems to be incredibly high - although I realize that the sensor for the car's rain sensing wipers may complicate the installation. Would having the work performed at a windshield replacement shop using OEM glass be a suitable alternative?