E90 Brake Squeal
Discussion
I’m pulling my hair out of I’m honest…
I cannot stop my brakes from squealing when they warm up. From cold they’re great but when they get warm they squeal under light activations. It gives a bit of a chirp when it stops from dead cold for the first 100m but as soon as there’s mild temperature that shuts up but within 2-3 miles it then starts.
A bit of noise I can deal with but this is a real loud squeal that turns heads.
I’ve replaced discs and pads with standard Brembo pads and discs, wear sensors, carriers were removed and wire brushed properly, pads were greased with ceratec and the sliders were cleaned and left as per BMW specs. I’ve stripped the pads and greased them again numerous times and can’t see any glazing or rhyme or reason - unless it’s just brembo pads! I’ve even tried Brembo Be quiet grease on the sliders and pad ears which made no difference.
Can’t tell whether it’s front or rear but it’s definitely right hand side.
My next plan to replace the pads with OE, new wear sensors, new sliders and grommets etc.
The calipers are not seizing and there’s no adverse wear or heat from any one wheel.
Any ideas of what this can be?
Car is an E90 325i with 300mm discs front and rear.
Thanks!
I cannot stop my brakes from squealing when they warm up. From cold they’re great but when they get warm they squeal under light activations. It gives a bit of a chirp when it stops from dead cold for the first 100m but as soon as there’s mild temperature that shuts up but within 2-3 miles it then starts.
A bit of noise I can deal with but this is a real loud squeal that turns heads.
I’ve replaced discs and pads with standard Brembo pads and discs, wear sensors, carriers were removed and wire brushed properly, pads were greased with ceratec and the sliders were cleaned and left as per BMW specs. I’ve stripped the pads and greased them again numerous times and can’t see any glazing or rhyme or reason - unless it’s just brembo pads! I’ve even tried Brembo Be quiet grease on the sliders and pad ears which made no difference.
Can’t tell whether it’s front or rear but it’s definitely right hand side.
My next plan to replace the pads with OE, new wear sensors, new sliders and grommets etc.
The calipers are not seizing and there’s no adverse wear or heat from any one wheel.
Any ideas of what this can be?
Car is an E90 325i with 300mm discs front and rear.
Thanks!
nipsips said:
I’m pulling my hair out of I’m honest…
I cannot stop my brakes from squealing when they warm up. From cold they’re great but when they get warm they squeal under light activations. It gives a bit of a chirp when it stops from dead cold for the first 100m but as soon as there’s mild temperature that shuts up but within 2-3 miles it then starts.
A bit of noise I can deal with but this is a real loud squeal that turns heads.
I’ve replaced discs and pads with standard Brembo pads and discs, wear sensors, carriers were removed and wire brushed properly, pads were greased with ceratec and the sliders were cleaned and left as per BMW specs. I’ve stripped the pads and greased them again numerous times and can’t see any glazing or rhyme or reason - unless it’s just brembo pads! I’ve even tried Brembo Be quiet grease on the sliders and pad ears which made no difference.
Can’t tell whether it’s front or rear but it’s definitely right hand side.
My next plan to replace the pads with OE, new wear sensors, new sliders and grommets etc.
The calipers are not seizing and there’s no adverse wear or heat from any one wheel.
Any ideas of what this can be?
Car is an E90 325i with 300mm discs front and rear.
Thanks!
For me Brembo discs = good. But their pads are sI cannot stop my brakes from squealing when they warm up. From cold they’re great but when they get warm they squeal under light activations. It gives a bit of a chirp when it stops from dead cold for the first 100m but as soon as there’s mild temperature that shuts up but within 2-3 miles it then starts.
A bit of noise I can deal with but this is a real loud squeal that turns heads.
I’ve replaced discs and pads with standard Brembo pads and discs, wear sensors, carriers were removed and wire brushed properly, pads were greased with ceratec and the sliders were cleaned and left as per BMW specs. I’ve stripped the pads and greased them again numerous times and can’t see any glazing or rhyme or reason - unless it’s just brembo pads! I’ve even tried Brembo Be quiet grease on the sliders and pad ears which made no difference.
Can’t tell whether it’s front or rear but it’s definitely right hand side.
My next plan to replace the pads with OE, new wear sensors, new sliders and grommets etc.
The calipers are not seizing and there’s no adverse wear or heat from any one wheel.
Any ideas of what this can be?
Car is an E90 325i with 300mm discs front and rear.
Thanks!
te IMOI'd look into ATE Ceramic pads or OEM pads from Jurid or Textar
Pica-Pica said:
I can only say that both on my E36 for 19 years, and now my F30 335d for 6 years, I have not once had brake squeal. All fitted with OEM parts at a main dealer.
My F series touring with oem performance brakes was a nightmare. New ( non oem) discs and pads finally cured it.I'd probably just take the pads out, clean them and refit with ceramic grease. If this doesn't work, unless the discs are worn I'd leave them and fit some Brembo pads, using ceramic grease on the backplate/sliders (whatever it says in the fitting instructions).
Of course if you're getting someone else to do the job they will just want to change everything and charge you an arm and a leg instead of a few quid for some grease, maybe some pads.
Of course if you're getting someone else to do the job they will just want to change everything and charge you an arm and a leg instead of a few quid for some grease, maybe some pads.
stan.kubrick said:
I'd probably just take the pads out, clean them and refit with ceramic grease. If this doesn't work, unless the discs are worn I'd leave them and fit some Brembo pads, using ceramic grease on the backplate/sliders (whatever it says in the fitting instructions).
Of course if you're getting someone else to do the job they will just want to change everything and charge you an arm and a leg instead of a few quid for some grease, maybe some pads.
The OP states:Of course if you're getting someone else to do the job they will just want to change everything and charge you an arm and a leg instead of a few quid for some grease, maybe some pads.
"I’ve replaced discs and pads with standard Brembo pads and discs, wear sensors, carriers were removed and wire brushed properly, pads were greased with ceratec and the sliders were cleaned and left as per BMW specs. I’ve stripped the pads and greased them again numerous times and can’t see any glazing or rhyme or reason - unless it’s just brembo pads! I’ve even tried Brembo Be quiet grease on the sliders and pad ears which made no difference."
So he's already been there/done that...!
d_a_n1979 said:
stan.kubrick said:
I'd probably just take the pads out, clean them and refit with ceramic grease. If this doesn't work, unless the discs are worn I'd leave them and fit some Brembo pads, using ceramic grease on the backplate/sliders (whatever it says in the fitting instructions).
Of course if you're getting someone else to do the job they will just want to change everything and charge you an arm and a leg instead of a few quid for some grease, maybe some pads.
The OP states:Of course if you're getting someone else to do the job they will just want to change everything and charge you an arm and a leg instead of a few quid for some grease, maybe some pads.
"I’ve replaced discs and pads with standard Brembo pads and discs, wear sensors, carriers were removed and wire brushed properly, pads were greased with ceratec and the sliders were cleaned and left as per BMW specs. I’ve stripped the pads and greased them again numerous times and can’t see any glazing or rhyme or reason - unless it’s just brembo pads! I’ve even tried Brembo Be quiet grease on the sliders and pad ears which made no difference."
So he's already been there/done that...!
e21Keith said:
d_a_n1979 said:
stan.kubrick said:
I'd probably just take the pads out, clean them and refit with ceramic grease. If this doesn't work, unless the discs are worn I'd leave them and fit some Brembo pads, using ceramic grease on the backplate/sliders (whatever it says in the fitting instructions).
Of course if you're getting someone else to do the job they will just want to change everything and charge you an arm and a leg instead of a few quid for some grease, maybe some pads.
The OP states:Of course if you're getting someone else to do the job they will just want to change everything and charge you an arm and a leg instead of a few quid for some grease, maybe some pads.
"I’ve replaced discs and pads with standard Brembo pads and discs, wear sensors, carriers were removed and wire brushed properly, pads were greased with ceratec and the sliders were cleaned and left as per BMW specs. I’ve stripped the pads and greased them again numerous times and can’t see any glazing or rhyme or reason - unless it’s just brembo pads! I’ve even tried Brembo Be quiet grease on the sliders and pad ears which made no difference."
So he's already been there/done that...!
The OPs clearly tried what needs to be tried; so why insist he goes over it again... Makes no sense!
Wow didn’t expect so many replies if I’m honest!
Thanks all!
2 votes for ATE ceramics so I might get some on order. The only thing I haven’t done is use the ceramic grease on the backplate of the pads just to see if it shuts it up and also where the pad goes into the piston, although that seems fairly tight if I’m honest.
I think if that doesn’t work I’ll be ordering getting a decent discount code from autodoc and sticking an order in
Thanks all!
2 votes for ATE ceramics so I might get some on order. The only thing I haven’t done is use the ceramic grease on the backplate of the pads just to see if it shuts it up and also where the pad goes into the piston, although that seems fairly tight if I’m honest.
I think if that doesn’t work I’ll be ordering getting a decent discount code from autodoc and sticking an order in
nipsips said:
Wow didn’t expect so many replies if I’m honest!
Thanks all!
2 votes for ATE ceramics so I might get some on order. The only thing I haven’t done is use the ceramic grease on the backplate of the pads just to see if it shuts it up and also where the pad goes into the piston, although that seems fairly tight if I’m honest.
I think if that doesn’t work I’ll be ordering getting a decent discount code from autodoc and sticking an order in
That may help; but generally it doesn't. It's the 'ears' of the pads that squeal most where they resonate with the caliper. But no harm in trying...Thanks all!
2 votes for ATE ceramics so I might get some on order. The only thing I haven’t done is use the ceramic grease on the backplate of the pads just to see if it shuts it up and also where the pad goes into the piston, although that seems fairly tight if I’m honest.
I think if that doesn’t work I’ll be ordering getting a decent discount code from autodoc and sticking an order in
Did you notice if the pads had anti squeal shims already fitted (sometimes they're rubberised)?
But in all honesty you'll not go wrong with the ATE Ceramic pads; they're absolutely superb!
Thanks guys
I believe the pads are already chamfered and there doesn’t appear to be any signs of glazing. I’ve got some liquimoly anti squeal grease so I’m just going to empty that over the whole assembly and see what happens (I’m joking).
I believe the pads have anti squeal shims on them already! But I’ll double check tomorrow
I believe the pads are already chamfered and there doesn’t appear to be any signs of glazing. I’ve got some liquimoly anti squeal grease so I’m just going to empty that over the whole assembly and see what happens (I’m joking).
I believe the pads have anti squeal shims on them already! But I’ll double check tomorrow
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