AM V8 Pads

Author
Discussion

m33ufo

Original Poster:

4,959 posts

236 months

Thursday 12th February 2009
quotequote all
My car is currently in with AM having some items attended to. They are replacing the brake disks and are also suggesting I replce the pads at the same time. I appreciate that this is generally good practive but the existing pads are relatively new (just a few thousand miles old). What's your opinion?

I'll check in the morning but what kind of cost would I be looking at - front and rear pads (material only)

rick-dms-

1,105 posts

192 months

Thursday 12th February 2009
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hi in the first place why are the discs having to be replaced?, Retail price for the pads including the vat is £478.63, that is not including the handbrake pads, if the face of the old discs is uneven probably best to replace pads, there should be no extra labour as already in there,

m33ufo

Original Poster:

4,959 posts

236 months

Thursday 12th February 2009
quotequote all
It's not all bad, the discs are being replaced under warranty.

That sounds a heck of a lot of money for supply only. I thought the pads had been replaced at last service a few thousand miles ago but I may be mistaken as apparently the garage reports that the rears are excessively worn and the fronts have a few thousand miles left on them. I don't have a any warning indicators on.

m33ufo

Original Poster:

4,959 posts

236 months

Thursday 12th February 2009
quotequote all
Just a thought, if I'm changing them should I consider an upgrade to Pagid race pads? Is it likely that my local dealer could supply these?

bogie

16,563 posts

277 months

Thursday 12th February 2009
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that sounds like a full set of pads all round?

Ive had my rears and fronts done on seperate occasions at a dealer and each time they were under £200 for parts ...havnt had the handbrake done yet

if I were doing the pads myself in this case, and theyve only been on a couple of thousand miles, id be tempted to give them a bit of a sand and put them back on !

wezzer-45's

187 posts

208 months

Thursday 12th February 2009
quotequote all
The life expectancy of V8 and DB9 pads are approx 10,000 miles, some last longer and some wear quicker. They are very dependant on driving style.

They have a tendancy to wear the rear pads quicker than the fronts, this is unusual for most cars but is caused by the traction controll applying the rear brakes to stop the wheel spin.

It is also common to wear the discs unevenly, this is caused by brass pins embedded in the pad material which become exposed when the pads wear low, these pins wear slight grooves into the disc surface.

As for fitting different pads, DON'T DO IT. The brakes on the V8 are designed to out stop a Porsche Carrera S with the ceramic brake upgrade, They are superb and you will never get any kind of fade however you drive.

It looks like you are having a good deal with free discs and it is best practice to always fit new pads with new discs.


s.m.h.

5,733 posts

220 months

Thursday 12th February 2009
quotequote all
wezzer-45's said:
They are superb and you will never get any kind of fade however you drive.
Ok, so it was on a circuit (it was an N24 so quite a bit lighter) but I have seen the standard brakes boil fluid, overheat/distort the calipers and cause the brake pedal to hit the floor, within 1/2 an hour. The brakes on these are fine for the road but thats about it. Where did you get your ceramic porsche quote from?

wezzer-45's

187 posts

208 months

Thursday 12th February 2009
quotequote all
The AMV8 is designed to go head to head with the Porsche carrera S.

It was tested extensively on the nurbergring and consistently put in faster times than the Carrera S with the ceramic brake upgrade kit fitted.

I also personally know someone that that every weekend drives a standard DB9 auto (same brakes on a heavier car) constantly on a track for a driving experience company. This car lives on a track day in, day out, the discs are heavily discoloured but never cause any problems.

I've driven plenty of Aston Martins and talked to plenty of people who drive their cars hard and have never heard of any mention of fade,judder or failure except from you.

The cars use a dot 4 fluid that should be replaced at 20,000 miles or 2 years.
Perhaps the fluid in the car that you have mentioned has not been replaced as recommended and has deteriorated which has caused the fluid to 'boil'

I stand by what I say, and that is the standatd brakes are awesome and are well up to the job ten times over in my opinion.

bogie

16,563 posts

277 months

Thursday 12th February 2009
quotequote all
Ive used mine on track a few times. Once I had all day instruction booked at Snett and my Elise was poorly so I had to take the Vantage. The instructor was most impressed with the std brakes on the V8 commenting that they were much better than other so called "track orientated" cars hed driven recently like a CSL and even an F360 with a brake upgrade.

To be fair, after about 15-20 mins of hard lapping, with braking down from well over a ton each lap they didnt fade at all and lasted the day out just fine.

I did have the rears replaced at the 10K service due to the reason mentioned above, but the fronts lasted until 20K ish (even with a track day in between) and Ive had a full set of tyres and now up to 33K miles ..not bad really considering the use me thinks, I mean I didnt buy it to be a track car, so its more than met expectations when It has been used on track smile

m33ufo

Original Poster:

4,959 posts

236 months

Thursday 12th February 2009
quotequote all
wezzer-45's said:
As for fitting different pads, DON'T DO IT. The brakes on the V8 are designed to out stop a Porsche Carrera S with the ceramic brake upgrade, They are superb and you will never get any kind of fade however you drive.
I'm not doubting the stopping power of the standard pads but the N24 has Padgid RS29's with (I believe) the same brake set-up as the standard V8? If I can get them for the same cost as standard pads I thought they would be an upgrade.

rick-dms-

1,105 posts

192 months

Thursday 12th February 2009
quotequote all
aston recommend replacement if the pads are over 60% worn when checked at service, so if the car is 3 years old and completed say 10000 miles and the pads are 60% worn, should they be replaced?. they could possibly last for two more services before they put on the brake pad warning light. mmmm suppose thats why i just advise how long approximately they will last and leave the decision up to the owner.


Murph7355

38,647 posts

261 months

Friday 13th February 2009
quotequote all
I was under the impression the stock pads were Pagids...could be wrong.

As for longevity...

Mine have done 20k miles. Only the rears were mentioned at service a month ago. These were 50% worn. I appreciate everyone has their views on such things, and that Aston are going through tough times, but I'm not replacing half worn pads.

m33ufo

Original Poster:

4,959 posts

236 months

Friday 13th February 2009
quotequote all
My car is now on 17K miles. I would normally wait to see a warning indicator before thinking about pads but in this instance the discs are being changed all round so I guess logically it's sensible to replace them.

I haven't seen the pads but I was told the tech advised the rears for replacement now and the fronts within 2 or 3K miles. By doing them now I would avoid an additional labour charge as the discs are being renewed.

On the other hand I've had a LOT of bad experiences with other dealerships - mainly BMW, who advised me something similar and I fell for it (once!). The second time I asked to see the pads which I doubt would have required replacement within 6K miles or probably more a lot more.

Ho-hum!

Edited by m33ufo on Friday 13th February 08:38

Lucozade

2,574 posts

284 months

Friday 13th February 2009
quotequote all
bogie said:
Ive used mine on track a few times. Once I had all day instruction booked at Snett and my Elise was poorly so I had to take the Vantage. The instructor was most impressed with the std brakes on the V8 commenting that they were much better than other so called "track orientated" cars hed driven recently like a CSL and even an F360 with a brake upgrade.
The CSL standard brakes are a joke, one lap of the ring and they were gone. I'm so far very impressed with the V8's brakes, hopefully will perform better when i'm at the ring this year.

bmartin

216 posts

195 months

Friday 13th February 2009
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Lucozade said:
The CSL standard brakes are a joke, one lap of the ring and they were gone. I'm so far very impressed with the V8's brakes, hopefully will perform better when i'm at the ring this year.
Sorry to say but that is rubbish. While CSL standard brakes may not be the best, they work perfectly on the ring with just upgraded pads, fluid and braided hose. If yours were gone after just one lap, you are braking far too much or in the wrong manner wink

s.m.h.

5,733 posts

220 months

Friday 13th February 2009
quotequote all
wezzer-45's said:
The cars use a dot 4 fluid that should be replaced at 20,000 miles or 2 years.
Perhaps the fluid in the car that you have mentioned has not been replaced as recommended and has deteriorated which has caused the fluid to 'boil'

I stand by what I say, and that is the standatd brakes are awesome and are well up to the job ten times over in my opinion.
IIRC N24 comes with fully syth brake fluid.As for the pads on the car that boiled the brakes - Im not sure of,either Pagid or PF. It was pretty much straight from the factory without any mods. On the road and for occasional track days Im sure theyre ok, but constant hard running - more than just 15-20 mins then a full cool down - would probably show the problems.
Ive some mates who were on the N24's at PalmerSport for that newspaper competion or the like - thier respose was the instructors thought the brakes were - how can we say it - crap, with very similar results!

m33ufo

Original Poster:

4,959 posts

236 months

Friday 13th February 2009
quotequote all
Oh well, bit the bullet and agreed on pad replacement - they'll certainly not require further replacement in my ownership.

Prices were £203.32 (rear) and £212.88 (front) plus VAT....£478.63 just as Rick-DMS said.

sadlerj

855 posts

289 months

Friday 13th February 2009
quotequote all
Mine do feel different after a few laps, or a very spirited dive...but they never seem to fail to stop me....just need more of a shove. Has anyone had a go at replacing them themselves, if so do you have any tips? I used to be quite handy with a spanner but have not done anything for a while, and fancy getting my hands dirty again.

m33ufo

Original Poster:

4,959 posts

236 months

Friday 13th February 2009
quotequote all
It's just been suggested to me that as it's a Brembo brake set-up then Brembo should be able to provide pads.

bogie

16,563 posts

277 months

Friday 13th February 2009
quotequote all
Pagids are the factory "upgrade" pads yes, not sure if the standard ones are Brembo or Pagid blacks (RS4-2-2) or blue RS4-2. I much prefer the RS42 for a road car and have run them for years in my other cars. RS29 or 14s are track pads - and will squeal like hell on a road car, not offer as good performance from cold etc - not really suitable for a daily driver, more for a car that spends it life on track smile