What would you suggest I do then to stp the squealing on the cermaic pads for a DB9. QUOTE=King Prinze;4592165]I have an 06 DB9 and im having serious issues with the squealing I just installed after market ceramic pads. What should i do since you're insisting the BG stop squeal is not a good remedy for the ceramic pads?[/QUOTE]

 

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Ceramic maxtrix pads are not what he was referring to. Carbon ceramic brakes are a very different animal.

I would always suggest reaching out to the manufacturer of a product to answer questions of compatibility. A random individual on the internet has no vested interest in the consequences of product misuse.

 

gonna give this a try, (15 bucks for 4 bottles, why not?) my brakes sound like a damn truck between 5-10mph and medium brake pressure

 

I have DB11 2021 year:. Since having the car with 4000 miles as second owner I've had screaming brakes when stopping the last 5-10 mph. Aston has re-grounded the pads twice and lasted 24 hours. I've tried to stop squealing and it lasted about a month. The problem is worse in dry sunny weather. I've ordered Porterfield RS-4 pads at about £600 cost for front and rear. We'll see whether that solves the problem, it's my last resort
The problem is the original ston pads are not chamfered, the pads are too hard, and too much dust
Aston denies there's a problem so they won't fix it. The salesman tried to tell me his BMW squeaks, I don't really care about his BMW, it's the first car in 40 years that has squealed and it shouldn't be acceptable

 

my brakes squealed with the OEM original dusty pads until i bought normal (non-aston) semi-ceramic pads at a reasonable price ($40 per set) off ebay and installed them with a bit of copper grease on the backing plates. no dust, no squeal.

oh, i might have overestimated the price... i think they were EBC or Centric pads and it looks like they may be less than $20 per set. and BTW, no need to bed or treat them special in any way, unless you're calling a couple of good hard stops from 20-30 mph at stop signs bedding. and that's all there was to it. of course as always, YMMV.

it's not surprising really, disc brake pads should never cost any more than $40 per set for Brembo calipers. in fact, the more expensive the more likely they will squeal, create massive dust, and wear quickly. after all, they are expensive because they are either Aston Martin labeled or made for RACING, not street use.

 

RS-4 is not the solution. the more racy the pads, the more likely you will have squeal. i like the EBC orange pads, but they are hard too and very prone to squeal and toughest to bed for street use.. pagid street sport pads are great as they still have track capability, but squeal less. the reason for squeal is simple. pads are not perfectly mated to the surface. you want to reduce squeal, especially the 5-10mph to stop speed range, you need to mate the pads.. this is called "bedding" the technique for bedding racind pads properly is harsh, but effective. it requires HIGH speed )100mph to 60mph, repeat decells. ... and even dragging the brakes till failure (throttle and brake until fail). they smoke and smell, but you cook out the resins of the pads. do this 4-5 times on freeway, cruise 2 miles for cool down, turn around and do it again and you should be good. i have a write up on how do do this correcly i give to the racing community. ive run the hardest pads, nascar ST40s, HT15, pagid black (racing) and PFC11s and all are race pads and all are tough to bed, but the PFC11s are best for high temp and rotor wear. (st40s just tore up the rotors , these are nascar pads). so, if you want to stop the squealing, you need to cook the pads and get those pads and rotors to be best friends. there has NEVER been a pad i havent been able to stop squealing, easiest with new rotors, and harder with used rotors and hard compound pads.

 

its not the pads, its the pads mating to the rotors. they need to be bedded. all the perfection in the pad surface wont change a thing if the rotor is not mated to the pads, and that is what the bedding process is for.

 

100% agree. People will change pads and do nothing to the rotors and wonder why they are difficult to bed or squeak. I have used a green abrasive pad on drill wheel to horizontally clean the rotor and the pad beds in nicely.

 

the residue, on the rotor can be a problem too, and that's a way to solve it. (scrubbing, green pad, etc brake cleaner) but, even a worn rotor with some wear, groves etc, all can be overcome by a proper or aggressive bed in procedure. what we are trying to do is use the softer material on the pad, to make subtle wear patterns on the rotor. ive had grooved race rotors , caused by a small rock/pebble and aftrer a couple of races the rotor is smooth again. as long as the rotor isnt too worn below limits, or warped, a new set of pads can clean up a rotor nicely... but it might be tough to bed if the compound is hard, like a race or performance pad

 

I installed my second set of R4-S (NOT RS-4) all around on my 2014 Vantage this past Spring. I'm approaching 50K since new, so long ago left the OEM Pagid in the dust, literally. The R4-S is chamfered such that squeal has not occurred and the marginal reduction in contact surface is not an issue since I don't track. BUT note the recommended bedding of these street pads is, basically, don't! See Aston1936.com for a thorough review of the Porterfield R4-S recommended bedding, or dig it up on the Porterfield sight. Can't comment on the track oriented RS-4 or DB11 issues.

And, just a data point, Feb' 23 order with RedPants executed w/o a hitch.