How to stop squeeky brakes on a 328?

I had the same problem on one of my cars. I changed to a different brand and compound. No more noise.

 

I have had best results with "Green" pads from Tire Rack, although others are OK, some cars are just a b1tch, I have had two Porsches over the years which would always squeal, customers would baulk at new calipers.

 

Keep looking in this area for a thread called something like "348 Brakes squeeling-It just won't stop!!!" or something like that. Guys were bouncing around a number of suggestions, but the one that works is to switch to different pads, I think they were called Peterfield pads or something like that.

Mine does it too and when I'm in need of pads I'm gonna go for those pads.

Best!
Wes

 

Porterfield

 

Anyone tried that gel-like stuff that you put on the rear of brake pad claimed to help stop squeeling?

 

Battman,
Probably the best cure is to remove the pads and put the goop on the back of them. If you DIY, then it is only your time...if you are paying someone else to do it, you may want to replace or upgrade the pads at the same time, since you are paying the labor anyway.

While you can "upgrade" to super duper hi po pads...I purchased a pad similar in performance to the stock pad, but warranted to be squeek free and very low dusting...and they were right, no squeeks, and VERY low dust. Made by Axxis, they are called the Deluxe Plus pad....more info here:

http://www.zeckhausen.com/axxis_pads.htm

If you track or autocross, then you probably want a better pad than these...but they are fine for normal street driving. These newer "plus" pads actually match the performance of the longstanding "metalmaster" semi-metallic pads that have been around for 25 years or so, but dust less and are gentler on rotors. The bonus is that these are perhaps $60 for the fronts, and $50 for the rears (if you shop around)...less than half the cost of the factory pads.

BTW, if you really want to improve brake feel, get rid of the old, soft, factory rubber brake lines, and replace with stainless steel braided lines. Less than $100 from here:

http://snipurl.com/8ck1

I was surprised at the improvement after ditching those 17yo brake lines....

 

I ordered my Porterfields through http://www.myroadster.net/ - great prices and they also come with an anti-squeal kit much like you are describing above.

- JMG

 

I, too, can report good quieting results when using the anti-squeak goo (Permatex brand "Disc Brake Quiet" IIRC) -- although on the TR the piston-to-pad annular contact area is so small that the goo gets forced out eventually (the larger, single 308 brake piston was better in that regard).

The noise does come from the various hard metal components at the backside vibrating around, but I believe the type of pad material can influence how much the whole pad asssembly vibrates so I wouldn't rule it out completely as a non-factor. I always opt for longest rotor life and least dust so I get the wimp (quietest?) pads anyway. For my last front pad set I went un-gooped, and I get the low-speed, light brake squeal occasionally (but not so often or so bad that I'd hassle with reworking it -- although next set I'll probably try gooping again).

One complication can be if your model has an anti-noise plate between the brake piston and the metal portion of the pad -- gives you two interfaces to now ponder (do both?, do 1?, if 1 which 1?), and can make disassembly difficult (e.g., on the TR, if gooped, you have to separate the pad from the anti-noise plate with a thin blade before you can withdraw the pad).

 

interesting thread! I just took my 328 on a hard 10 laps or so at Mosport (truly awesome experience btw!) and noticed squeeking of the brakes on the drive home alot..i just figured they got really hot on the track but didnt figure it was a common problem with 328's....

 

Take the pads and grind a slight angle to the leading edge of the pad then smear black silicone sealer on the back of the pads. Let the silicone sealer set up and reinstall the pads. The squealing noise is from the pads vibrating against the caliper pistons. The rubbery silicone sealer keeps the pads from vibrating.

 

If the laps were really hard, you can over heat/tax the pads and they may need to be replaced. I smoked a pair of front Porterfield R4S pads on my 355 from getting too hot on a very long, and winding road. Had squeeling and pulling to one side. Race shop tried the grinding trick, but when they examined them, they said they were whitish deposits, which meant they were done. New and all is well.

 

Yes I have tried this but it only worked for about a week and then they started squealing again.

 

Get new pads. Porterfield R4S are popular here, available from sponsor Ricambi America, and cost around $110 per set. Pretty inexpensive, and solves your problem. One side benefit, they produce about 50% less dust than the oem pads, don't squeal, and have similar performance.

 

Brakes squeel from the pad vibrating and the noise emanates from the metal to metal contact at the caliper body/ backing plate contact point. Anything that can either, dampen the vibration or insulate the contact area, will reduce or eliminate the noise. Some materials especially more aggressive compounds do it more readily than others and sometimes, some pads just can't be made to not make noise. Many of the suggestions here are known to work but none are foolproof.

 

You just need to throw the junk pads away and buy some good ones.

You also need a better dealer. They are either ignorant or just cant be bothered to think out of the box to address complaints.

 

The "old school fix" is to bevel the leading edges of the pad. Remove the pads and put an "appreciable" bevel using 80 grit sand paper. This prevents them from "skipping" and or "squealing" on the rotor. Did it on wifey's car and it worked perfect.

 

Problem is the next dealer's probably 500+ miles away. They've really got a captive audience with those cars unless your in Socal or the like I'd think. Would a Ferrari independant like yourself work on these cars?(just curious, I've considered these cars and might in the future)

I've got the same squeking problem with my 328. Thanks for all the suggestions, guys, shall try the gel when it comes time.

Jeff

 

I just say no to Masers and Lambos.


There are independants that do but I am often curious why someone would buy a car, any car that there is only one choice for service within a tolerable distance.