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Brake squeal

dereksharpuk

dereksharpuk

New member
My new Gen 2 C2 Cab has low speed brake squeal. It is inversly proportional to speed and brake pressure. ie louder the slower you go & louder with very gentle application of brake. It disappears if you brake hard or apply braking above 16 mph.

Apparantly there are several C2s with this problems. Interestingly C2s, and maybe C2Ss, can be fitted with 2 different types of pad, the 'U' and the '1'. PAG are investigating this wretched problem and I hope will sort it out soon. I don't really want heads to turn for brake squeal, but naturally don't mind if they turn to look at a great car and of course a handsome driver. [:D].

Anyone else had this problem on Gen2?
 
Hi Derek, The demonstrator c2 at leicester had the most terrible squeal ive EVER heard. When i drove it i was very concerned about it as i was about to part with my hard earned. To cut a long story short it started off with a little squeak(apparantley) and ended up sounding like a screaming banshee every time you touched the brakes. It has had to have all brake pads changed and is now perfect. Get back in touch with your o.p.c and let them know this asap.[:mad:]
 
Apparantly only happens to C2s with certain pads. It is an easy fix but OPCs have to refer to PAG [:mad:]. So yet another journey back to the OPC, at my expense.
 
ORIGINAL: hyelms

My new C2 is squealing like a banshee. Going back today to be fixed......
Click to expand...

Hi Gerry,

I am still waiting for mine to be fixed and it is really pissing me off. The other car at my OPC that had this problem has had different pads fitted and we await to see (hear) if the problem returns. If that solves it, they will do the same for me. I just wonder, given the large numbers that have this problem, why it was not fixed before launch. Perhaps the problem was there, but Porsche did not want to delay launch but let OPCs/owners do the trouble shoot. [:mad:]

Let me know how you get on.
 
They were very impressed with my squeal, it is the worst they have heard and helps them as they couldn't reproduce it on another couple of customers cars.
I have posted a poor quality video of the old squeal here ! http://web.onetel.com/%7Egerrywhitlow/997squeal.3gp

Had new pads fitted at the front. It cured the bad squeal but after 50 miles i have had a couple of tiny squeeks starting to appear.
OPC say Germany recommend they fit a different compound pad which has the same part no. but either has a different suffix or a green dot on it, also assemble with a special grease on the back of the pads ( not the old fashioned copper grease ).
This usually clears the problem but not always. It is due to resonances between the calliper and pad and another way of eliminating it is to change the mass of the calliper. A modified calliper is under development at the moment and may have to be fitted later to cars that the pads don't cure.. The current calliper is similar to one of the GT3 models and they are known to squeak but apparently most people accept this as they are "racing brakes"
 
Had the new pads fitted today but like Gerry it did not completely cure the problem. I got a couple of minor squeals on the way home. My OPC says give it time to see if it gets better or worse.
 
Given the supposed development mileage cars cover (whether they be new models or facelifts) its laughable that probably one of the top three used items on a car has made it to production in this state. You have to wonder at the Porsche Engineering Excellence.
 
My brakes still squeal (albeit less) even with the new pads! Any other C2 owners getting brake squeal with the alternative pads?
 
Derek, how many miles have you now done, or is the car still sat doing nothing and not allowing the brakes to bed in [;)]

garyw
 
My old disks/Pads did squeal, especially when cold and especially after Switzerland.

Funnilly enough with new pads fitted there is less squeal - even though with these I was told they would squeal when cold.
 
ORIGINAL: garyw

Derek, how many miles have you now done, or is the car still sat doing nothing and not allowing the brakes to bed in [;)]

garyw
Click to expand...

Well I must admit I do not use the car every day, especially during the recent atrocious weather. I have now done just over a 1000 miles. Porsche still do not have a solution and I was told today that many C2s with PDK have this problem. PDK makes the situation worse because the problem occurs at low speed, low brake pressure. This is just when the speed of a manual car is regulated by clutch control in 1st gear or reverse. This obviously cannot be done with an automatic.

Porsche's latest solution is to apply a special grease to the back of pads. I'll let you know when this has been done and if it works.
 
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