Discs

[rickster147]

Just got my car back today after its been in garage for a new rear wheel bearing been fitted
They advised me that my direction drilled discs are on the wrong way round etc
Am I best swapping them over or just leaving them
And would you swap the pads Aswell would it make much difference any advice welcome
This is how the car was when I bought it and I hadn't noticed myself

[audi_do_dat_den]

Theyre directional for a reason.
If your mechanic/garage advised you to swap the pads from one side to the other, I would seriously have concerns about their credibility.

Don't scrimp or bodge on brakes with these motors..... if you open the brakes - change the pads.... minimum.

[audi_do_dat_den]

Check which way the front disc vent holes spiral and settle your concern.
But defo don't re-use the pads.

[rickster147]

The pads are fairly new and are yellow stuff so you are saying if I do swap the discs over don't use the pads buy new?
I think the fronts are wrong way Aswell the direction of the holes point towards the front if you look at the top of the disc

[MikeFish]

Did they mean the front or rear discs? The front discs are all drilled the same way (i.e. only one part for both left and right) so the holes go the wrong way if looking at one side of the car but they are ok on the other side. For some reason though they made the rears direction (i.e. a left disc and right disc; different parts).
So the front discs can't go on the wrong side as they are the same, and on one side of the car the direction of holes on the front won't match the rear.

[rickster147]

It's the rear and the rears have an arrow pointing wrong way
Glad you said that about the fronts got my worried then
If I swap the rears over won't the pads just bed back in again?

[pule333]

This is silly talk about replacing pads... if they are not damaged keep them. They will bed in again...
a lot of guys who race on the track swap hardcore race pads after the race for OEM versions for every day use with no issues... if there are no cracks, no deep scoring on the pads or discs you are ok to reuse.

[rickster147]

This is silly talk about replacing pads... if they are not damaged keep them. They will bed in again...
a lot of guys who race on the track swap hardcore race pads after the race for OEM versions for every day use with no issues... if there are no cracks, no deep scoring on the pads or discs you are ok to reuse.

That's what I thought if I had to replace to pads I'll leave the discs how they are
the holes are for weight loss and heat escape
If the pattern of the fronts are the same for both sides I can't see the rears being a problem unless theres a certain pattern inbetween the disc veins
I'm sure someone will put me right

[pule333]

This is silly talk about replacing pads... if they are not damaged keep them. They will bed in again...
a lot of guys who race on the track swap hardcore race pads after the race for OEM versions for every day use with no issues... if there are no cracks, no deep scoring on the pads or discs you are ok to reuse.

That's what I thought if I had to replace to pads I'll leave the discs how they are
the holes are for weight loss and heat escape
If the pattern of the fronts are the same for both sides I can't see the rears being a problem unless theres a certain pattern inbetween the disc veins
I'm sure someone will put me right

I tell you a little secret. Mine are the same. Lol. Discovered it when installing new pads in September... since than done 6 track days and no issues.. the direction of the disc has something to do with cooling veins running inside but honestly I don't think it would matter as much as audi would like to believe... front brakes do most of the work and they are non directional. Just drive and enjoy!

[Harris.]

Theyre directional for a reason.
If your mechanic/garage advised you to swap the pads from one side to the other, I would seriously have concerns about their credibility.

Don't scrimp or bodge on brakes with these motors..... if you open the brakes - change the pads.... minimum.

Why would you change the pads because you have removed them ??? Never heard of that before

As above if there clean with no damage then use them

[Mr Footlong]

Agreed, I wouldn't go binning fairly new yellow stuff pads and as already stated, brake bias is as a generalisation, always heavily weighted to front braking, makine the rears far less of a concern.

Can,t see the harm personally with moving the pads at the same time from side to side to match the braking surface, but it isn't absolutely necessary.

Get the discs turned around if desired, keep the pads and they will settle back in to whatever groovrs are on the discs already with time. I am not sure how much effect a bedding in session would have due to the bias, just take her for a drive out of the way somewhere and check you are confident that the brakes hold up when needed.

I have cooked brakes on various cars over the years to the point of them blueing, smoking profusely, boiling the fluid to the point of having practically no brakes and setting my front pads on fire somehow once, at no point did i get anything like that from the rears, showing the massive difference in bias imo.

[rickster147]

I think if I change the discs over be best to take the pads
As well as they wouldn't need bedding in if I keep the right pads in order they came off Imo

[Mr Footlong]

Exactly, match the sides they come off/inner/outer pads and that is all you can ask for. If you are concerned (I really wouldn't be though), do a bit of light braking to start off with and if the pressure is light enough on the rear pads as they are being applied, they will soon find their previous exact grooves on the discs to sit in, assuming the likes of cooper grease is being used for a bit of added pad adhesion and assuming there are any grooves on the discs worth a damn. Regardless, worrying about nothing chap

[pule333]

I think if I change the discs over be best to take the pads
As well as they wouldn't need bedding in if I keep the right pads in order they came off Imo

Are you planning to do it yourself? Remember tears aren't as straight forward as the fronts. Need to unbolt the carriers and that's a pita. Also in order to swap pads you may need special winding tool for the calipers to push the piston back. It twists.
Providing you have the tools it's still fairly easy. Just not as straight forward as the fronts... which clearly were designed with Motorsport in mind. Literary takes less than a minute to swap 8 pads per wheel...

[rickster147]

Yes I will be doing it myself and and I do have one of those kits somewhere haven't used it for about 6 years hopefully in garage somewhere