How many of you get an 'air/squishing' sound when stepping on the brake pedal? Mine seems to be louder than normal. I never noticed it in the last 11 months. Dealer says it is normal and they all make it. Even told me all BMW boosters are that noisy but I never remember my 533i making that noise in the 20 years I owned it. Thoughts?

 

You probably need to have your brake fluid replaced. Old brake fluid or fluid that has gotten air bubbles in it can cause the squishy feeling and sound.

How many miles since the last time the brake fluid was changed?

 

I've only got 12,000 miles!

 

800 miles, mine is silent.

 

13.5k miles (?) quite too.