Squeaking Brakes

[barry_j]

I recently had new disks and pads fitted all round on my 996tt. The disks are genuine Porsche whilst the pads are Textar which I am told are what Porsche use and then put their logo on the box. I used Textar pads on my 993tt without any problems.

The problem I have is that when I brake they squeak really loudly. Its like I'm driving a lorry! It is more pronounced when its wet or when I'm driving slowly (eg in traffic) and just having to brake gently to bring the car to a stop. They don't squeak if I'm braking simply to slow the car down without stopping or if I brake hard.

Any ideas what can be done about this please?

[paulburrell]

Did you reinstall the anti squeal shims that stick onto the back of the pads or alternatively a layer of copperslip paste?

The Textars are indeed the same as the OEM versions and so that shouldn't be your problem.


)

[DanH]

Perhaps need some bedding in?

www.stoptech.com/tech_info/wp_bedinstock.shtml

[barry_j]

Thanks for the replies. Yes, I had the shims fitted although by the sound they're making you wouldn't believe it!!

I haven't bedded them in as well as described in the link but I thought I did a reasonable job of bedding them in and yet they still squeal

[barry_j]

DanH said:

Perhaps need some bedding in? www.stoptech.com/tech_info/wp_bedinstock.shtml

Tried this but they're still squeaking. Any other suggestions please?

[richardb.jones]

give it a bit more time + a few controlled (safe) high speed stops should bed everything in. If it still sqeels, then suggest checking if they did fit the shims (!), bit difficult to see from just looking at the calipar as the shims go 'inside' the calipar pistons. Richard.

[damianc4s]

Porsche OEM pads are Textar for the rear Jurid for the front. These pads have a anti-squeal metal shim on the non-friction side, this shim has a rubberised material to help reduce squeal. The front calipers use the adhesive block shim that fits into the piston and sticks to the pad. If you have used anti-squeal compound this stops this block shim sticking to the pad and therefore introducing squeal.

[graeme73s]

barry_j said:

I recently had new disks and pads fitted all round on my 996tt. The disks are genuine Porsche whilst the pads are Textar which I am told are what Porsche use and then put their logo on the box. I used Textar pads on my 993tt without any problems. The problem I have is that when I brake they squeak really loudly. Its like I'm driving a lorry! It is more pronounced when its wet or when I'm driving slowly (eg in traffic) and just having to brake gently to bring the car to a stop. They don't squeak if I'm braking simply to slow the car down without stopping or if I brake hard. Any ideas what can be done about this please?

Hi Barry,
do yourself a favour and champher the leading edge of the brake pad it will solve your problem or better still get the dealer to do it. since the asbestos problem reared is nasty head it happens all the time. cheers graeme

[barry_j]

graeme73s said:

do yourself a favour and champher the leading edge of the brake pad

sorry to be stupid, what does champher mean? how do you do it?

[graeme73s]

Hi Barry,
If you look at the face of the pad the side is 90 degrees to the face ie. a right angle. If you put a 45 degree angle on the side of the leading edge of the brake pad just 1mm ie. looking at the nearside front brake caliper at the brake pad nearest you it is the edge at the bottom of the caliper if the brake calipers are behind the axle line or if they are in front of the axle line then it will be the top of the caliper. This will cure your problem. If you are not quite sure send me a pm with a contact number and i'll give you a call.

[damianc4s]

barry_j said:

graeme73s said: do yourself a favour and champher the leading edge of the brake pad sorry to be stupid, what does champher mean? how do you do it?

Just run the edge of the pad on the pavement/wall/road a couple of times and that should be enough.

[barry_j]

Thanks guys - I'll give that a go...