Technical Wrong brake calipers causing squeak?

[jackwhoo]

Yeah I was also not really sure what good it would make.

The nearest scrap yard that has them is 1 hour away, maybe I could drop by in the weekend or something. Either that or I will have to text them to send a picture.

Would fixing the pad carrier fix the squeaking? That is kinda of the answer the dealer came to, but they said it would be too expensive for them to fix for me.

These pads that are on my car right now are not the same as the ones I posted before. I had those put on, and that is when the squeaking started. The garage then said to change discs and pads, which is now both Brembo, sadly though I do not have part numbers. They have said multiple times tho that these match the OEM specs and the dealer said they looked the same as the ones they were gonna put on.

This is the best I could do with a sewing measure tape, hope this helps.

Regarding the Corsa, it is the 1.4 petrol engine.

I would say go to scrap yard and look yourself and take your own pictures but if they sounds friendly on the phone send them your picture and ask if they can send you similar pictures of their scrap car.

Yep that pic is good start.

Looking through your finger it looks like the height of the rubbed area is 40mm, is that correct?

 

[Compax]

I would say go to scrap yard and look yourself and take your own pictures but if they sounds friendly on the phone send them your picture and ask if they can send you similar pictures of their scrap car.

Yep that pic is good start.

Looking through your finger it looks like the height of the rubbed area is 40mm, is that correct?

Just sent them a Whatsapp, will see what they say tomorrow.

40mm seems about right yeah, and sorry was hard to hold and take a picture

I can maybe grab another picture tomorrow after work.

 

[Rado77]

I have similar issue on my GP. I bought it as used car. On left disc I see 1cm of non-braking material, on the right side only 2 milimeters. I measured thickness of both discs and both passed minimum. So I'll replace them + pads = Brembo. Sometimes old owner or car dealer gives there some crappy pads, only for "better selling", and thats my case. Pads are thick like new so somebody changed them on both sides. Car is braking well and passed MOT without issue.
Regarding squeaking - yes, it squeakes randomly (I would say two days per month) and it doesnt depend on weather. Similar issue I have on Renault - when I changed original metal winter wheels to original metal summer wheels, it started squeaking immediately! The same original Renault wheels with same diameter...very strange! And I didnt touched brake system at all! So its not clear if discs edge is real cause of squeaking, or metal plate glued on pads (some types) or if pads are vibrating itself....or what...

 

[jackwhoo]

I have similar issue on my GP. I bought it as used car. On left disc I see 1cm of non-braking material, on the right side only 2 milimeters. I measured thickness of both discs and both passed minimum. So I'll replace them + pads = Brembo. Sometimes old owner or car dealer gives there some crappy pads, only for "better selling", and thats my case. Pads are thick like new so somebody changed them on both sides. Car is braking well and passed MOT without issue.
Regarding squeaking - yes, it squeakes randomly (I would say two days per month) and it doesnt depend on weather. Similar issue I have on Renault - when I changed original metal winter wheels to original metal summer wheels, it started squeaking immediately! The same original Renault wheels with same diameter...very strange! And I didnt touched brake system at all! So its not clear if discs edge is real cause of squeaking, or metal plate glued on pads (some types) or if pads are vibrating itself....or what...

Hi Rado77,

Please could you post some pictures of your front discs , similar pictures to ones compax has posted, it could really help

Huge thanks.

Jack

 

[jackwhoo]

https://youtu.be/-ckfnRZ2X_A

Have a look at that,
Car is punto evo sporting but it has exactly the same caliper, pad carrier and disc as your Grande punto t jet, except red paint. I cross referenced the part numbers directly on the brembo website.

Notice how the wear on old disc is central to part of disc pads rub on.

Plus you will see parts disassembled and know what part names refer to.

I really think someone has fitted the wrong pad carriers to your car.

If you can get the part number of calipers garage just fitted I may be able look them up and see if correct.

 

[Compax]

https://youtu.be/-ckfnRZ2X_A

Have a look at that,
Car is punto evo sporting but it has exactly the same caliper, pad carrier and disc as your Grande punto t jet, except red paint. I cross referenced the part numbers directly on the brembo website.

Notice how the wear on old disc is central to part of disc pads rub on.

Plus you will see parts disassembled and know what part names refer to.

I really think someone has fitted the wrong pad carriers to your car.

If you can get the part number of calipers garage just fitted I may be able look them up and see if correct.

Oh I had already watched that video before all of this, but yeah you are right something is wrong with my car. Saw another Punto today in the parking lot, a non turbo but it was also fine.

I have sent an email to the garage to ask for part numbers for the discs, pads and calipers so you have that info.

Regarding noise, today I did not have any going to work which was nice, but pulling out of the supermarket parking lot at like 10km/t made it squeak a little bit, so I will most likely be heading back to the garage next week.

 

[Rado77]

Here it is. Not so visible as I thought, but its 10PM here...you can see almost 1cm of rusty edge on left disc

 

[jackwhoo]

Here it is. Not so visible as I thought, but its 10PM here...you can see almost 1cm of rusty edge on left disc

Hi ,

Thanks for the pictures,

It looks like pads rubbing differently side to side but they are actually the same. Rust has grown on outside of left disc making it look like pad not rubbing there. If you look closely at rust inner half has a black coating , which is brake pad material.

I agree looks like someone put new pads on worn discs , I hate that.

Cheers
Jack

 

[Compax]

Here it is. Not so visible as I thought, but its 10PM here...you can see almost 1cm of rusty edge on left disc

Hey!
Thanks for taking the time to take that picture, really helps out a lot!

 

[PuntoHowTo]

I’ve gone through all of this thread and one thing has jumped out at me, in the pictures the pads are lovely and clean on the backs, which if the garage had smeared them with some copper grease, not only would they not be so clean but it’s the standard way of stopping brakes from squeezing.

Also those discs are only a few months old and look at the grove you’ve already worn into them!! How hard are you breaking !!?

I agree you should not have such a big ‘rim’ around the edge of the disc where the pad is not making contact. I’d argue perhaps the wrong discs have been fitted but.

You’ve got the answer in front of you as your girlfriend has a corsa which is a Punto in GM clothing , it very likely has the exact same brakes.

So my recommendations are get some high temp copper grease on the back of the pads, calm down on how hard you are braking. The squeak will very likely go away.

For reference, my car is the blue one in the video above. The brakes were done in about July 2018 and I’ve attached a picture of how little they have worn in that time, considerably less than your couple of month old discs. (The photo was taken about an hour ago)

 

[Rado77]

I'll pay attention while choosing new discs+pads. I saw Brembos with good price, but I have to double check all dimensions...my pads have also sensor

 

[Bernievarian]

Just checked on mine (1.3 MJT), the outer lip is about 3mm wide ... Wear is only just visible @ 140.000 km and 2nd replacement pad set is currently installed.

BRs, Bernie.

 

[jackwhoo]

I’ve gone through all of this thread and one thing has jumped out at me, in the pictures the pads are lovely and clean on the backs, which if the garage had smeared them with some copper grease, not only would they not be so clean but it’s the standard way of stopping brakes from squeezing.

Also those discs are only a few months old and look at the grove you’ve already worn into them!! How hard are you breaking !!?

I agree you should not have such a big ‘rim’ around the edge of the disc where the pad is not making contact. I’d argue perhaps the wrong discs have been fitted but.

You’ve got the answer in front of you as your girlfriend has a corsa which is a Punto in GM clothing , it very likely has the exact same brakes.

So my recommendations are get some high temp copper grease on the back of the pads, calm down on how hard you are braking. The squeak will very likely go away.

For reference, my car is the blue one in the video above. The brakes were done in about July 2018 and I’ve attached a picture of how little they have worn in that time, considerably less than your couple of month old discs. (The photo was taken about an hour ago)

Sort of

except

his girlfriend's car is a 1.4 which has 257mm discs and different height pads, his car should have 284 discs like your car. Which is why I linked video, great video by the way.

257mm discs have pads of 53.3mm height and 123mm long.

284mm discs should have 57.4mm height pads and are 137mm long.

It looks to me that pads less than 57mm height have been fitted which leads me to think pad carriers may be wrong for his car too.

it should be impossible to fit pads for 257mm discs to pad carriers for 284mm discs.

The hub carriers are also different for 257mm discs and 284mm discs.

Calipers are also different between 257 and 284 discs.

I did put forward solution of getting hub carriers, pad carriers and calipers from a scrap yard . Use what is needed to get car back to factory spec and return rest to scrap yard if they accept returns.

 

[Compax]

I’ve gone through all of this thread and one thing has jumped out at me, in the pictures the pads are lovely and clean on the backs, which if the garage had smeared them with some copper grease, not only would they not be so clean but it’s the standard way of stopping brakes from squeezing.

Also those discs are only a few months old and look at the grove you’ve already worn into them!! How hard are you breaking !!?

I agree you should not have such a big ‘rim’ around the edge of the disc where the pad is not making contact. I’d argue perhaps the wrong discs have been fitted but.

You’ve got the answer in front of you as your girlfriend has a corsa which is a Punto in GM clothing , it very likely has the exact same brakes.

So my recommendations are get some high temp copper grease on the back of the pads, calm down on how hard you are braking. The squeak will very likely go away.

For reference, my car is the blue one in the video above. The brakes were done in about July 2018 and I’ve attached a picture of how little they have worn in that time, considerably less than your couple of month old discs. (The photo was taken about an hour ago)

Hey Andy, Great to have you chip in on this post!

The pads and discs are new, however I have yet to get the part numbers from the garage, all I know is that they are Brembo.

Looking at your discs I can see mine already look more worn, I do really not brake very hard or often. I do drive a lot tho 120km a day.

I will post again once I have the discs info, to see if the right ones have been indeed fitted. Could the extra wear be because of the bad/wrong bad carriers?

 

[Compax]

Sort of

except

his girlfriend's car is a 1.4 which has 257mm discs and different height pads, his car should have 284 discs like your car. Which is why I linked video, great video by the way.

257mm discs have pads of 53.3mm height and 123mm long.

284mm discs should have 57.4mm height pads and are 137mm long.

It looks to me that pads less than 57mm height have been fitted which leads me to think pad carriers may be wrong for his car too.

it should be impossible to fit pads for 257mm discs to pad carriers for 284mm discs.

The hub carriers are also different for 257mm discs and 284mm discs.

Calipers are also different between 257 and 284 discs.

I did put forward solution of getting hub carriers, pad carriers and calipers from a scrap yard . Use what is needed to get car back to factory spec and return rest to scrap yard if they accept returns.

Would too big or wrong pads fit the small carrier tho? For me it would not make sense for the big pads to fit just fine in the small carrier, but if they are in fact wrong pads, and also wrong discs then the garage ****ed up.

The dealer did say they had one set out of 5 OEM pads that they could not get to fit at all to my car, even though they should fit no problem?

 

[jackwhoo]

Would too big or wrong pads fit the small carrier tho? For me it would not make sense for the big pads to fit just fine in the small carrier, but if they are in fact wrong pads, and also wrong discs then the garage ****ed up.

The dealer did say they had one set out of 5 OEM pads that they could not get to fit at all to my car, even though they should fit no problem?

Carrier for 284 discs takes pads that are 137mm long. Measure with your sewing tape.

Carrier for 257 discs takes pads 123mm long.

Mixing them up appears impossible.

But we don't know what has been done to your car.

Dealers don't know everything.

Measure diameter of disc fitted to your car with sewing tape.

Post results.

 

[jackwhoo]

You should be able to tell your disc size with sewing tape between 257 and 284.

Your girlfriends car has 257mm discs so use your tape to measure hers to get an idea of how to line up tape and line up your eye. Angle of view can make big difference

Plus measure the height of the wear band on the disc.

Did you get any part numbers from garage of what they fitted?

 

[jackwhoo]

https://www.bremboparts.com/europe/...-t-jet-199axm1a-199bxm1a-199bxn1a/000023194-1

Click on this link

Scroll down to pads

Click on pad p 23 137

Click on technical drawing

You will see what to measure without taking wheel off

You should be able to measure across the pad "ears" to see if its 137mm

 

[Compax]

Hey Jack!

Thanks for the info, tomorrow is a day off, so i'm gonna take a look at it then
I sadly do not own any tools to take the wheels off, so will have to do all the measuring with them on.

As for the part numbers, no they did not get back to me, other then saying I will get them soon?

 

[jackwhoo]

Hey Jack!

Thanks for the info, tomorrow is a day off, so i'm gonna take a look at it then
I sadly do not own any tools to take the wheels off, so will have to do all the measuring with them on.

As for the part numbers, no they did not get back to me, other then saying I will get them soon?

Cool, I look forward to measurement of pad length and the other measurement.

We will get somewhere with this!

Till tomorrow.