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Old 05-14-2018, 05:14 AM
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Brake Pads

I have an 07 Vantage V8 and read some old posts here on brake pads. Just after some info on good choices for aftermarket options - prefer ceramic or any tip to reduce carbon dust if using regular pads.
 
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Old 05-14-2018, 05:48 AM
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This might help:
 
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Old 05-14-2018, 11:39 AM
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That reminds me I have to order pads and rotors. Just placed an order for Porterfield R4-S pads and Wilwood rotors from Redpants.LOL. Thanks, Rich.
 
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Old 05-14-2018, 02:13 PM
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i actually have quite a bit of experience with pads and rotors from my previous ownership of an 6.1L SRT that wasn't tracked.

the SRT used the same brembo braking system and looks to be the same pad compound. after trying a couple different pad combinations i can say that
the Hawk HPS PLUS (not the HPS 5.0), is about as hard core track pad as you're gonna get. but be warned that the HPS PLUS sounds like a freight train. i am not even sure if they make the PLUS version for the aston. but that pad engrained in me so vividly. if you've ever stopped at the rail way crossing and see a train slamming to a halt, that's what those pads sound like. they sound like freight train crossing. but they do stop like a brick wall. so i do believe when Redpants say the R4 are track only, they're TRACK ONLY. if they sound as loud as the HPS PLUS, everyone on the street will hate you. everyone and their grandmother will stare at you but not for a good reason. those track pads are just not meant for the street period. i quickly swapped them back to ceramic pads after.

Redpants, what compound are those R4-S?

one thing i do have to say tho, a lot of the noise issues has to do with compound being used more so than the bevel, in my experience. the beveling do help, but if you have a track based compound, no beveling or shim is going to quiet that down.

i am actually inclined to switch to ceramic pads when my OE is up eventually. but Ceramic tend to eat up the rotors faster. i just think paying for OE pad price is ridiculous. after a couple rounds you start to ask yourself why you're still doing it. and the Ceramic pads, before anyone say it's not as powerful as OE stopping power, trust me, if you're just driving on the street, you won't notice any difference. at least i didn't notice any difference. you would have to be tracking the car to notice any clear difference.
 
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Old 05-14-2018, 03:06 PM
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The R4-S is carbon kevlar.

I used the HPS on an my old STi and loved them. Never bothered with the HP Plus because the HPS did well enough for street, autocross, and drag racing (never took it on a track). The HPS 5.0 is a great pad and handles hard driving, including track time, while working on the street as well. But it dusts a lot more than the R4-S, and the trade-off isn't necessary for most of my customers, so they stick with the R4-S.

I'm using the Hawk HPS 5.0 on my grey V8V and the Porterfield R4-S on my red one. Each pad suits each car perfectly, given what I use them for.
 
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Old 05-14-2018, 03:19 PM
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Originally Posted by Redpants View Post
The R4-S is carbon kevlar.

I used the HPS on an my old STi and loved them. Never bothered with the HP Plus because the HPS did well enough for street, autocross, and drag racing (never took it on a track). The HPS 5.0 is a great pad and handles hard driving, including track time, while working on the street as well. But it dusts a lot more than the R4-S, and the trade-off isn't necessary for most of my customers, so they stick with the R4-S.

I'm using the Hawk HPS 5.0 on my grey V8V and the Porterfield R4-S on my red one. Each pad suits each car perfectly, given what I use them for.

have you noticed any wear pattern on the rotor between all those pads? does the HPS 5.0 wear faster or slower compare to OE, or does the R4-S wear out the rotor any faster or slower?

also i noticed on your website, you have an upgraded rotor. do you also sell OE rotor? i believe OE rotor shouldn't be that expensive compare to pads.
 
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Old 05-14-2018, 03:34 PM
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The R4-S [thanks Rich] will save your sanity. Those OEM pads create so much dust it's ridiculous, the squeal I could handle, the dust I couldn't. And it starts to eat into the clear on the rims fast so if you let it go a couple weeks you'd have to spend an extra hour trying to get all the dust specs off after you got the bulk of the dust off. I'm not shy with the brakes and they stop plenty fast, though I'm not sure if I'd want to push max speed into turn 1 standing on them.
 
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Old 05-14-2018, 04:58 PM
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Originally Posted by AMTas View Post
I have an 07 Vantage V8 and read some old posts here on brake pads. Just after some info on good choices for aftermarket options - prefer ceramic or any tip to reduce carbon dust if using regular pads.

I have been selling the Porterfield R4-S Pads for nearly 10 years for the Astons. Not once have we had a complaint about them. They are SUPER low dust.


Not the right pad for serious track use but for a road driven car with some spirited driving.



www.velocityap.com/Aston-Vantage-DB9-Brake-Pads-Low-Dust-Porterfield-p/vel-aston-martin-pf-rear.htm


http://www.velocityap.com/Aston-Vant...n-pf-front.htm
 
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Old 05-14-2018, 06:38 PM
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I recently changed front rotors...stayed stock AM type but used Brembo HP2000 brakes all around.

The brake sensors do not work on these pads...so just wire tie off or take off if you want to go back to stock type pads... No big deal.

Low dust grab and hold really well...I would have used Rich's Hawks as my son had hawks on his cars before and liked but decided since Brembo made our brakes I wanted to see if decent pads too.

While low dust...the break in is longer then a few miles...needed around 5-6 hundred for decent bedding. We did need to apply anti squeak on front pads twice...I guess new rotors and pads needed more attention. The backs never cried once...lol

Overall most owners will be thrilled with the porterfields for everyday...or the Hawks.

I have a little over 2500 miles on the Brembo hp2000 so far
 
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Old 05-14-2018, 06:52 PM
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I have tried the R4s pads on several of my other cars and find they are ok street pads and are low dust but if you take your car on an occasional track day they really are poor performers.(when I changed my evora from the stock Ferodo d2500 to r4s my lap time increased on average of 1.2 seconds on a 120 second track when I went to Ferodo's full race D1.11 pad I went down another half second or 1.8 seconds faster than the R4s pads) On the track the r4s lack any initial bite and begin fading fast with aggressive use.
I recently was able to get a set of Ferodo d2500 pads for my 12 v8v and was much happier with the performance on the track and was happily surprised with the low dust production.
The only down side was they don't accept the front wear sensors.
 
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Old 05-14-2018, 07:12 PM
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I purchased the R4S pads from Stuart when my 2014 Vantage was new.
Great seller and great very low dust pads.
 
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Old 05-15-2018, 06:20 AM
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Originally Posted by howzz1854 View Post
have you noticed any wear pattern on the rotor between all those pads? does the HPS 5.0 wear faster or slower compare to OE, or does the R4-S wear out the rotor any faster or slower?

also i noticed on your website, you have an upgraded rotor. do you also sell OE rotor? i believe OE rotor shouldn't be that expensive compare to pads.
The R4-S pads are going to be more rotor-friendly than the OEM Pagid pads. I haven't used the Hawk pads with OEM rotors - I've got them paired with Wilwood 2-piece rotors on my grey V8V, and the two rotors are made of different metal alloys.

That being said, I think they'll be more rotor-friendly as well, simply for the fact that they don't have brass studs in them like Pagid has. You can actually see them in my brake pad comparison video, the studs are the shiny spots on the pad:


Brass is a soft metal that wears through easily, and Pagid says they're softer than rotors so they don't damage the rotor. Looking at material hardness scales, brass has a typical hardness of 3-4, iron has a typical hardness of 4-5 (talc is 1, diamond is 10). On the Brinell scale, brass is at 192-202, iron is at 196-302 (up to 402 if cryotreated). There are lots of iron alloys, thus the wide range.

Bottom line for me is that Aston's rotors seem to wear out really quickly - it's a common question I get, and one I see very often online. I think it has more to do with the pads than the rotors. Whether that's due to the brass studs in the Pagids, or the Pagid friction material, either way, I think the pads are more cause of wear for the rotors than anything else. It's another reason why I recommend the R4-S pads, which are more rotor-friendly.

I'm still working on getting a new supplier sorted out so I don't have any OEM rotors at the moment

Originally Posted by Aldv View Post

While low dust...the break in is longer then a few miles...needed around 5-6 hundred for decent bedding. We did need to apply anti squeak on front pads twice...I guess new rotors and pads needed more attention. The backs never cried once...lol
Not surprised to hear that. The bed-in process is to transfer pad material to the rotors. It improves braking and reduces squeal. New rotors need a bit extra bedding in because they don't have friction material already on them from a previous set of pads.
 
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