Porterfield R4's went on today...more....
Thread Starter
Junior Member
Joined: Jan 2001
Posts: 550
Likes: 0
Porterfield R4's went on today...more....
Put the R4s on my 2001 2.7t in preparation for next weeks Quattro school at Summit. Since I can get the stock pads to fade on the street, I know they'll never hack it on the track. Also bled entire system and filled with Motul 600. Stock rotors - yes, I'll probably warp them.
Front: P/N AP Audi-S4
Rear: AP 228
Notes: larger pad surface area, fr & rr. I chamfered the leading edges on all pads - didn't help. They still squeal like a pig when cold.
Fronts: fit with a little grinding of pad backing plate.. Easy DITY install - no special tools. 1/2 hours tops once you get them to fit. No wiring for sensor - just jumper the female plug, cover with shrink wrap, and whala - no error lamps.
Rears: DO NOT FIT!!!! The tab for the spring mount is too tall to fit under the caliper. So for now, stock pads are still on the rear - does anyone know of a set of track pads that will fit the rear calipers?????
How they work: don't know yet - will break in tonight when traffic dies down. Seem really dusty so far, but so what they are a track pad. WIll use with stock wheels running 225/50-16 Kuhmo Victoracer tires.
Mike
Front: P/N AP Audi-S4
Rear: AP 228
Notes: larger pad surface area, fr & rr. I chamfered the leading edges on all pads - didn't help. They still squeal like a pig when cold.
Fronts: fit with a little grinding of pad backing plate.. Easy DITY install - no special tools. 1/2 hours tops once you get them to fit. No wiring for sensor - just jumper the female plug, cover with shrink wrap, and whala - no error lamps.
Rears: DO NOT FIT!!!! The tab for the spring mount is too tall to fit under the caliper. So for now, stock pads are still on the rear - does anyone know of a set of track pads that will fit the rear calipers?????
How they work: don't know yet - will break in tonight when traffic dies down. Seem really dusty so far, but so what they are a track pad. WIll use with stock wheels running 225/50-16 Kuhmo Victoracer tires.
Mike
AudiWorld Senior Member
Joined: Mar 2000
Posts: 1,869
Likes: 0
Squeeling under light pressure when cold is normal for these in just about all applications
Thats true of most track pads, as is the dust.
I imagine you've already called them direct on the rears, if not, do so as they're good people to work with and should respond.
R4S's are geared a little more to street in terms of squeel and dust but don't have the friction coefficient of the R4s. Do give us the report after the event.
I imagine you've already called them direct on the rears, if not, do so as they're good people to work with and should respond.
R4S's are geared a little more to street in terms of squeel and dust but don't have the friction coefficient of the R4s. Do give us the report after the event.
Thread
Thread Starter
Forum
Replies
Last Post
RLG
A6 / S6 (C5 Platform) Discussion
3
Mar 4, 2005 02:33 PM
Mark P
S4 / RS4 (B5 Platform) Discussion
6
Oct 11, 2003 02:48 PM
absolutcq20v
Audi 90 / 80 / Coupe quattro / Cabriolet
2
Sep 21, 2003 06:22 AM
