just make sure the aftermarket glass is made for HUD if u have HUD in ur X5. apparently some ppl have gotten the non hud compatible glass which made the HUD display very dim. members mentioned there is something special in the area where the HUD is projected to so it reflects the HUD display back properly.
check this link, multiple different part numbers for different windshield options.
https://www.realoem.com/bmw/enUS/sho...47#51317292399