New pads and discs??!?!

[paulo]

Just had my 20k service (second service) and have been told I need front pads and discs. My pads are 95% worn, and apparently my discs are scored.

Talking to the technician, it's apparently a common problem with the RS4's due to the compound of the discs. They also told me the RS4 discs can't be skimmed. Does this sound right?

Now, I know I'm not the best at keeping the car clean, but should I really expect the discs to need replacing so often due to scoring from dirt and grit?

I'm not really keen on getting these replaced at the moment, so what are my potential risks for leaving them? Would it just be a case of increased wear on the pads?


Paul

[SR71]

I think you'll find that due to a design defect, your discs are scored because you left the pads in there too long.

Lots of threads on the forum about the idiotic design.

I'd never skim a performance cars discs myself....maybe on the A3, although I recently had to change both front discs and pads on that because a faulty pad had let a stone behind it and scored the discs.

[pippyrips]

I noticed light scoring on one of my discs recently and being aware of the damage worn pads can cause I took the car to Audi to check over.

The car came back with a clean bill of health and was told the score was most likely caused by a trapped stone etc.

Upon cleaning the car this weekend I noticed the other disc is also now showing signs of light scoring, in exactly the same place as the other. Now call me cynical but it seems too much of a coincidence that both sides of the car would trap a stone in exactly the same space within a month or so of each other?

I think I will be taking it back in for another check as I’m also starting to hear a metal on metal sound when applying light breaking. In the meantime has anyone got any pictures of discs that have been damaged by worn pads or any other known fault for me to reference against?

Thanks,

[simonhill]

They are just trying to spend your money for you - if the disc are not below the minimum thickness, I would leave well alone. I noticed that some motor racing applications are using discs with the scores already machined onto the surface - think about it - it provides more surface area on the disc.

[sonny]

Paulo how Much dd youpay for your serivce, was it a Longlife one? I had mine done today (second service at 23k)!

[rjkflyer]

Look, the problem is the pads. When the warning light comes on, the discs are too far gone. It's ludicrous design.

For this very reason, I changed to EBC YellowStuff - seem pretty much equivalent to originals in terms of performance and so far do not seem to be turning grooves in the discs like a tool in a lathe.

Problem is you have to modify the pads to get them to fit. See another of my posts.

Pagid RS-15s are seen a a great alternate, but no pad wear indicators and 400 quid a set. You pays your money.

[rjkflyer]

Pippyrips - see my pix on this post: http://www.rs246.com/index.php?name=PNp ... c&start=30

[Marcus-RS4]

What I dont understand is, if the metal is gauging the discs, surely the light would be on?? or is it that only one is touching?

[pippyrips]

Pippyrips - see my pix on this post: http://www.rs246.com/index.php?name=PNp ... c&start=30

Thanks rjkflyer

From looking at the pics there are 6 pins in the pad - two top, two bottom and two 1/3 of the way down?

The strange thing is the pins 1/3 of the way down seem to be around the area I have noticed the scoring, but I don't have anything around the top/bottom.

I will take a closer look tomorrow in daylight if I get a chance and take some pics to canvas opinion.

One thing I do know is if it does turn out to be pad damage after my dealership has checked them so recently I will be asking for replacement discs on the house.

[pippyrips]

Right, so I’ve looked at both the front discs this morning and both are now showing considerable scoring in exactly in the 3 places where the pins seem to be in rjkflyer’s picture.

I will be going back to Audi at my earliest convenience to pick the matter up but bearing in mind as I’ve mentioned previously, I took the car to be checked over recently and was told they were fine and was probably caused by a trapped stone (I even watched the Tech say the pads weren't even 50% worn in a ‘whatever’ kind of way to the Tech next to him while I watched him check them from the door) what would your approach be with them?

Coincidentally, should the Tech have removed the wheels to look/investigate? He didn't - all he did do was hold a torch up to the wheel....

Thoughts and opinions welcomed..

[pippyrips]

and just picking up on Marcus-RS4's point, if indeed the scoring is being caused by the pins in the pad, why isn't my low pad woarning light on?

[P_G]

Just had my 20k service (second service) and have been told I need front pads and discs. My pads are 95% worn, and apparently my discs are scored.

Talking to the technician, it's apparently a common problem with the RS4's due to the compound of the discs. They also told me the RS4 discs can't be skimmed. Does this sound right?

Now, I know I'm not the best at keeping the car clean, but should I really expect the discs to need replacing so often due to scoring from dirt and grit?

I'm not really keen on getting these replaced at the moment, so what are my potential risks for leaving them? Would it just be a case of increased wear on the pads?


Paul

Well done on 20K for a set, I'm on my third set at 38k miles!

[SimonS4MTM]

maybe on the A3, although I recently had to change both front discs and pads on that because a faulty pad had let a stone behind it and scored the discs.

How can that be the pads fault???????

I hope you went back to Audi and complained about the design letting a stone get trapped.

[SR71]

I have to say it was a bit bizarre...

I first noticed when I thought I'd detected a decreased retardation in response to that which I'd normally achieve for a particular braking effort.

(Of course, the wife wouldn't have noticed this until 2034, being more interested in listening to the new Pink album at full tilt wherever she goes...)

So I had a look at the front discs and pads and it looked like one of the pads had somehow collapsed at its outer extremity, leaving a gap between it and the disc.

Technically, rather than a score in the disc I had a ridge...

I just presumed something had got behind the pad and been responsible although, that being the case, I'd normally have expected a groove to have been left rather than a ridge, the stone being harder than the pad.

Anyway, being thoroughly confused as a result, and bearing in mind the disc/pad combo had been on there for a while with the discs definitely f**ked, I just had the whole lot replaced for £150.

[paulo]

Paulo how Much dd youpay for your serivce, was it a Longlife one? I had mine done today (second service at 23k)!

It was about £350 if my memory serves me correctly. That didn't include pads (or discs) as they need to order them in. It wasn't a longlife service either..... I didn't think they did longlife for the RS4?

Paul