I have a 1995 BMW 318ti that is starting to show its age in many ways.
One of the "annoying" problems I have encountered is the discoloration
in the side mirror glass. I would assume this is a moisture problem.
Does anyone know why this happens? Is there a way to replace he glass

Hit the aircon switch this morning ...no cold air.
swapped the front fan last year all was OK afterwards.
Did the internal pollen filter a coupelof monthback and did notice anything
untoward.