Is2016 f sport
So I replaced my pads and rotors because I thought the dealer put cheap ones. The noise was happening before I changed the brakes and now its happening again after replacing with OEM ones.
Any thoughts? Could there be dust going through the front air vents that go straight to the brakes? ?

 

Not likely that it’s a dust issue, it could be something is stuck in between something in the calipers or the dust shield and the rotor, etc. Is the noise at anytime you brake or just when you first brake after the car has sat for a while?

 

It’s usually when I brake after I sat for a while. And while coming out of the parking lot. When I replaced the brakes, the noise when away for a couple days.

 

Did you replace with oem pads? I switched to Akebonos, haven't had squealing since.

 

Yea I just put oem 3 days ago.

 

I'm no brake expert, but all I can think of is possibly trying out brake shims or lubricant. If that doesn't work, then maybe have dealer look at the car.

 

I’ll plus one this, one of the tsb’s for the squeal issue was just shimming the pads to eliminate it.

 

I have the same issue with Akebono pads. My guess is that the OEM double shims are better than the ones that came with Akebono. It's only in the morning though so it doesn't bother me enough to reshim..

 

I completely replaced the front OEM pads and shims with Akebonos and the shims that came with them only. Didn't put in any anti-seize or anything, and they're very quiet. Only time I hear anything from them is first thing in the morning when backing out of my spot as they squeal a bit.

 

I'm gonna have my mechanic look at them to see what else could be causing the noise here.

 

+1 with this, I haven't had any squealing since swapping out completely with Akebonos and shims, although I did use the anti-seize that came with it. Also, the decrease in brake dust has been awesome. So tired of cleaning that stuff off.

 

If you're only getting a squeal after the vehicle sits overnight, and the squeal only happens on the first brake application, then this is within the realm of normal.
I'll assume the car sits outside overnight, or you're in an area where the humidity is slightly on the higher side at the moment.
Applying the anti-seize that comes with the pads is also key and part of the entire process to keep the brakes as quiet as possible.

 

My Akebonos didn't come with anything but the pads and shims, fwiw.

 

The stock pads for F Sport are the premium luxurious professional sporty choice. They are supplied by Germany-- the company that supplies and contracts with BMW for decades. They are metallic pads with tons of metallic dust. The friction characteristic and the dust combine to make the overall conditions that promote noise. Drivers of track cars/race drivers wear the noise as a badge of honor. It means you have earth crushing brakes. In other words, for sport drivers w/ aggressive cars, it's not a bad thing. It's a way of life.

Now of course we don't want our street cars to be noisy, but just don't be surprised when and if they do. Part of the game. You wanna run with the big german boys? You'll get big german boy problems. Period.

Now what you can do to mitigate the noise is wash your wheels and brakes often (usually happens at the same time so wash both) and make sure you install using good techniques, on cleanest of surface as possible. On cars on their 3rd and 4th pad swap, make sure your brake hardware is cleaned back to base stock like new. Then use pro high temp brake grease on critical contact areas.

I did this and 12k of aggressive abusive braking on my F sport pad (2nd set) no noise whatsoever. but you have to be an enthusiast and kind of babysit them. if you're the type that goes to "the dealer" to get stuff done and just take your clothes to the dry cleaner and car wash every month... you're going to get noise galore.

 

LOL, "big German boy problems" are not squealing or brake dust, but being perpetual endless money pits. And BIG ones, indeed. Something that Lexuses most certainly are not.