Brake rotor/pads recommendation?
09-02-2003, 02:25 PM
#1
AudiWorld Super User
Thread Starter
Join Date: Jan 2003
Posts: 24,615
Likes: 0
Received 0 Likes
on
0 Posts
Brake rotor/pads recommendation?
Looks like I will be replacing the front rotors & pads soon. Any recommendation on aftermarket rotors that will fit the OEM calipers?
I would like to keep the $$ to a minimum, but would like to look into cross-drilled for heat dissipation.
I would like to keep the $$ to a minimum, but would like to look into cross-drilled for heat dissipation.
09-02-2003, 06:02 PM
#2
AudiWorld Super User
Don't know of anything, as usual, I recommend new stock rotors and pads
I think this will be your highest chance of having fewest problems.
pw
pw
09-02-2003, 07:24 PM
#3
Elder Member
Join Date: Mar 2001
Posts: 11,968
Likes: 0
Received 0 Likes
on
0 Posts
If you're worried about heat, I suggest avoiding drilled rotors ...
Brake dust gets sucked thru the holes, coats the cooling vanes, and reduces heat transfer. The holes also reduce rotor mass, further reducing their ability to handle heat.
Worse yet, the edge of every hole creates high localized stresses when the rotor's hot and becomes a point where a crack can initiate. The pic is a drilled Brembo on a Porsche; and Brembo's are about the best drilled rotor available.
<img src="http://audiport.com/959/DSCN0266a.jPG">
Worse yet, the edge of every hole creates high localized stresses when the rotor's hot and becomes a point where a crack can initiate. The pic is a drilled Brembo on a Porsche; and Brembo's are about the best drilled rotor available.
<img src="http://audiport.com/959/DSCN0266a.jPG">
09-02-2003, 08:46 PM
#4
Elder Member
Join Date: Mar 2001
Posts: 11,968
Likes: 0
Received 0 Likes
on
0 Posts
What year A8? A8 or A8L?
Stoptech has 323x30mm slotted front rotors available for the '99+ A8L, but I'm not sure if these are really any better than stock rotors. The A8 uses a 312x25mm front rotor.
I agree with Paul that the stock pads are hard to beat for the street. Since I have Alcon front calipers, I don't have the option of using the Audi pad. For a high performance street pad, I've been very pleased with both the Ferodo DS2500 and the Pagid 4-2-1, but I don't know if either of these is available for the front and rear (you should do both) of the stock A8 calipers. I have the Pagid on my car now, but the Ferodo can handle some light track use.<ul><li><a href="http://www.stoptech.com/cgi/search_category.cgi?base=../content5.shtml&action=special1&match=inexa ct%60%22w_special1=AeroRotor">Make/model Stoptech rotor search</a></li></ul>
I agree with Paul that the stock pads are hard to beat for the street. Since I have Alcon front calipers, I don't have the option of using the Audi pad. For a high performance street pad, I've been very pleased with both the Ferodo DS2500 and the Pagid 4-2-1, but I don't know if either of these is available for the front and rear (you should do both) of the stock A8 calipers. I have the Pagid on my car now, but the Ferodo can handle some light track use.<ul><li><a href="http://www.stoptech.com/cgi/search_category.cgi?base=../content5.shtml&action=special1&match=inexa ct%60%22w_special1=AeroRotor">Make/model Stoptech rotor search</a></li></ul>
09-03-2003, 12:04 PM
#5
Elder Member
Join Date: Mar 2001
Posts: 11,968
Likes: 0
Received 0 Likes
on
0 Posts
Would Slotted be better than drilled?
Slotted and plain are comparable and probably the best for resistance to warping.
Slotted and drilled rotors have two very small and relatively insignificant advantages compared to plain. The slots or holes tend to keep the pad surface clean -- minimizing the build-up of glazing on the pads, and the squealing that glazed pads can cause. They also have a slightly greater initial bite because of the edges of the slots (or holes). As a result, both tend to wear pads quicker than a plain rotor.
Actually, about the only thing "wrong" with a plain rotor is that it just doesnt look as racy.
Slotted and drilled rotors have two very small and relatively insignificant advantages compared to plain. The slots or holes tend to keep the pad surface clean -- minimizing the build-up of glazing on the pads, and the squealing that glazed pads can cause. They also have a slightly greater initial bite because of the edges of the slots (or holes). As a result, both tend to wear pads quicker than a plain rotor.
Actually, about the only thing "wrong" with a plain rotor is that it just doesnt look as racy.
Thread
Thread Starter
Forum
Replies
Last Post
4taz
A4 (B6 Platform) Discussion
8
05-03-2005 12:15 PM
beerguy
Audi 100 / A6 (C4 Platform)
4
08-07-2003 09:12 PM