Mr. Squeaky Breaks

[Joelang33]

Go safely do a few of 60 to 0 MPH hard breaking episodes. That usually will quiet them down for awhile.

yeah it seems as when I am HARD on the breaks, stopping quickly and applying force they don't squeal. when I am just driving normal coming to a stoplight/sign and applying small amount of force to the break pedal is when I get the squeal. which sucks because I am normally just driving chill and the last thing I want is squeaking breaks on a sweet sports car.. :(

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[2L8IWON]

I'm new to this issue, but I have brake squeal on my 16 GTPP. Did you ever try the caliper grease mentioned before?

 

[mustangtaxman]

subd

 

[dickeb]

Count me as another GT-PP with the noise. It's definitely not a normal 'performance brake pad' noise. It's a REALLY high-pitched squeal, like a wear indicator normally makes. I can control it pretty easily with brake pressure. Barely touch the brakes or get on them hard and you don't hear it. They only make noise in the normal operating range...of course haha.

Can anyone who has solved this issue in the past with brake grease comment on what the noise is like when lack of grease is the issue?

If I have time this evening I'm going to apply some brake grease and inspect the pads. I'll report back once done.

 

[shelbywannabe]

Count me as another GT-PP with the noise. It's definitely not a normal 'performance brake pad' noise. It's a REALLY high-pitched squeal, like a wear indicator normally makes. I can control it pretty easily with brake pressure. Barely touch the brakes or get on them hard and you don't hear it. They only make noise in the normal operating range...of course haha.

Can anyone who has solved this issue in the past with brake grease comment on what the noise is like when lack of grease is the issue?

If I have time this evening I'm going to apply some brake grease and inspect the pads. I'll report back once done.

My ex has a Cadillac ATS with Brembos and GM fixed the same issue with some so called special grease they ordered and it took care of it so its worth a shot. I have an Eco PP and they replaced my pads and rotors and it took care of it as it was embarrassing pulling up to a stop sign

 

[Joelang33]

I'm new to this issue, but I have brake squeal on my 16 GTPP. Did you ever try the caliper grease mentioned before?

I have not tried this method yet as weather has been pretty awful where I live. I will be taking a closer look at this issue once we get a few nice days and it warms up

 

[Joelang33]

Count me as another GT-PP with the noise. It's definitely not a normal 'performance brake pad' noise. It's a REALLY high-pitched squeal, like a wear indicator normally makes. I can control it pretty easily with brake pressure. Barely touch the brakes or get on them hard and you don't hear it. They only make noise in the normal operating range...of course haha.

Can anyone who has solved this issue in the past with brake grease comment on what the noise is like when lack of grease is the issue?

If I have time this evening I'm going to apply some brake grease and inspect the pads. I'll report back once done.

The way you described is EXACTLY the same here. :frusty: like you said about controlling with the brake pressure. normal operating range is where I get it. let me know if the brake grease works for you and if its worth going through the hassle. thank you!!!

 

[DeepImpactGTny]

I have the issue as well on my 15 GT PP. Subd

 

[Jasber]

Dealer just called and confirmed they'll be replacing my front pads and rotors on my '15 Eco PP. Thank goodness! That squeal was killing me!


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[Joelang33]

Dealer just called and confirmed they'll be replacing my front pads and rotors on my '15 Eco PP. Thank goodness! That squeal was killing me!


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lucky man. I just had my car in the shop for inspection and they said that the brakes looked fine. AGAIN. :frusty: also they stated that the TSB did not apply to my vehicle because its a GT PP....just like a few people have mentioned in this thread. So I guess if it starts acting up again once the weather warms up I will be trying that break grease that a few of you have noted on here.

 

[dickeb]

Update:
I added grease between the shim and the back of the brake pad. There was actually a fair amount of grease there from the factory so I wasn't expecting a miracle.

The back of the shim on these brembos (the part that directly touches the piston) is some sort of kevlar type material, so I don't think that is meant to have grease on it. I put a TINY bit of grease there just for the heck of it but I seriously doubt that matters.

I didn't drive until my commute yesterday so I could get an apples-to-apples comparison. Interestingly, the noise was just as bad right off the bat. I expected it to be better and then maybe go back to the way it was as the grease wore off, but it's the other way around. By the time I got home yesterday it was significantly quieter.

This morning - no noise at all. The brakes are completely quiet.
It was about 10 degrees colder this morning, but nowhere near as cold as it was all winter when these brakes were really loud, so I don't believe ambient temperature explains the difference.

There was a guy who posted elsewhere about this, claiming that tightening the lug nuts was actually enough to make a difference, and that after tightening them to the recommended 150 lb-ft the rotors would true up after using the brakes a few times. His theory seemed completely nuts to me at the time, but the way that my brakes have improved over the past 2 days fits this theory exactly. I can also say the lug nuts were definitely under spec. It's the first time they've been touched since the factory (car has 6k miles on it).
Again, this theory seems completely bonkers to me, but it fits based on how things played out.
I can't explain why greasing the brakes would take 2 days to show benefits...

The other possibility is that they stopped squealing on their own and this is all coincidence, but as consistent as they have been I doubt this.

 

[Jasber]

lucky man. I just had my car in the shop for inspection and they said that the brakes looked fine. AGAIN. :frusty: also they stated that the TSB did not apply to my vehicle because its a GT PP....just like a few people have mentioned in this thread. So I guess if it starts acting up again once the weather warms up I will be trying that break grease that a few of you have noted on here.

I don't know how TSB's originate, but there seem to be a lot of GT PP's that have this issue as well. Surely Ford should take care of all these issues if enough people are complaining.


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[keiths2kgt]

There was a guy who posted elsewhere about this, claiming that tightening the lug nuts was actually enough to make a difference, and that after tightening them to the recommended 150 lb-ft the rotors would true up after using the brakes a few times. His theory seemed completely nuts to me at the time, but the way that my brakes have improved over the past 2 days fits this theory exactly. I can also say the lug nuts were definitely under spec. It's the first time they've been touched since the factory (car has 6k miles on it).
Again, this theory seems completely bonkers to me, but it fits based on how things played out.

Yeah, this actually worked for me. I had some black after market lugs and I noticed the squeaky brakes. I found that dudes post, put my stock lugs back on and tightened to 150ft-lbs. no more squeaky. I didn't like the black lugs anyway...they showed the silver rings on the inside.

 

[Edkiefer]

Update:
I added grease between the shim and the back of the brake pad. There was actually a fair amount of grease there from the factory so I wasn't expecting a miracle.

The back of the shim on these brembos (the part that directly touches the piston) is some sort of kevlar type material, so I don't think that is meant to have grease on it. I put a TINY bit of grease there just for the heck of it but I seriously doubt that matters.

I didn't drive until my commute yesterday so I could get an apples-to-apples comparison. Interestingly, the noise was just as bad right off the bat. I expected it to be better and then maybe go back to the way it was as the grease wore off, but it's the other way around. By the time I got home yesterday it was significantly quieter.

This morning - no noise at all. The brakes are completely quiet.
It was about 10 degrees colder this morning, but nowhere near as cold as it was all winter when these brakes were really loud, so I don't believe ambient temperature explains the difference.

There was a guy who posted elsewhere about this, claiming that tightening the lug nuts was actually enough to make a difference, and that after tightening them to the recommended 150 lb-ft the rotors would true up after using the brakes a few times. His theory seemed completely nuts to me at the time, but the way that my brakes have improved over the past 2 days fits this theory exactly. I can also say the lug nuts were definitely under spec. It's the first time they've been touched since the factory (car has 6k miles on it).
Again, this theory seems completely bonkers to me, but it fits based on how things played out.
I can't explain why greasing the brakes would take 2 days to show benefits...

The other possibility is that they stopped squealing on their own and this is all coincidence, but as consistent as they have been I doubt this.

150ft/lbs seems way high , I have not checked specs but most vehicles lug are around 75-80 ft/lbs .
You know with a hub and slide on rotor over tightening can warp a rotor .
This is big no no at some places that just use impact w/o any TQ bar or checking setting.

 

[keiths2kgt]

150ft/lbs seems way high , I have not checked specs but most vehicles lug are around 75-80 ft/lbs .
You know with a hub and slide on rotor over tightening can warp a rotor .
This is big no no at some places that just use impact w/o any TQ bar or checking setting.

It did seem high but I checked the manual prior to believing the internets:

204 Nm = 150 ft/lbs

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