Audi RS6 Brake Judder
Discussion
I have a 2014 V8 RS6 which I bought about a year ago from a main dealer. It has had 4 sets of front discs fitted to try to resolve persistant brake judder. One time it was said to be front hub bearings which then caused discs to distort when I had to pay for the new discs. I have a one year warranty which is about to run out and the problem is starting again after less than 1k miles. This seems to be a type fault that can not be solved. Does anybody have know a fix or have any advice.
Not sure how front wheel bearings would distort discs either but you could try over on https://rs246.com/
What pads have you used? Always the same make?
Some, including mine (Monaro) are notorious for resin transfer from the OEM pad material to the disc. There is no visual evidence on the disc to be seen.
Instant fix was replace pads with Performance Friction brand (Banbury).
These pads have a compound that "scours" the disc surface. Cleans off the resin transfer. No fade. So need a couple of warm up brakings when going for a drive. They don't tear up the disc. Still on my original discs
Some, including mine (Monaro) are notorious for resin transfer from the OEM pad material to the disc. There is no visual evidence on the disc to be seen.
Instant fix was replace pads with Performance Friction brand (Banbury).
These pads have a compound that "scours" the disc surface. Cleans off the resin transfer. No fade. So need a couple of warm up brakings when going for a drive. They don't tear up the disc. Still on my original discs
I agree about wheel bearing issue and took it up with Audi UK but they wouldn't intervene and I had to pay up. Thanks for link to RS site, I will have a look.
Thanks for suggestion of Performance Friction I will give them a call tomorrow. I have heard of potential pad resin transfer problem before so don't sit with brakes on in traffic but I still have the problem yet again.
Local Audi dealer tells me the discs are out of true on dial guage when they check them each time so I don't know what to believe as I would not have thought pad resin transfer would have been measureable as it is not visible on surface.
Thanks for suggestion of Performance Friction I will give them a call tomorrow. I have heard of potential pad resin transfer problem before so don't sit with brakes on in traffic but I still have the problem yet again.
Local Audi dealer tells me the discs are out of true on dial guage when they check them each time so I don't know what to believe as I would not have thought pad resin transfer would have been measureable as it is not visible on surface.
If a disc is out of true, the caliper, depending on design, will slide on it's mounting bolts and float with the disc.
Resin transfer can't be measured, it just changes the disc surface slip property.
The pad snatches and grabs at the resinous disc surface.
Folk get told you're disc is warped and needs skimmed. Original pads are used and within time more resin transfer again and back to brake problems.
Resin transfer can't be measured, it just changes the disc surface slip property.
The pad snatches and grabs at the resinous disc surface.
Folk get told you're disc is warped and needs skimmed. Original pads are used and within time more resin transfer again and back to brake problems.
Where in the country are you?
It could be an issue with hubs, wheel faces, the roundness (or not) of wheels themselves, or brake components. The Audi dealer solution of "put new discs on" rarely works.
Marcus of Disc Skimmers is your man for this problem:
http://www.discskimmers.com/
There's a reason he has an excellent reputation for solving this sort of thing, he's really bloody good.
Done loads of 'normal' warped disc type jobs for me over the years but also solved some really pesky ones that have been traced to damaged hubs or wheel faces out of true. Things you'd never normally think would be a problem.
It could be an issue with hubs, wheel faces, the roundness (or not) of wheels themselves, or brake components. The Audi dealer solution of "put new discs on" rarely works.
Marcus of Disc Skimmers is your man for this problem:
http://www.discskimmers.com/
There's a reason he has an excellent reputation for solving this sort of thing, he's really bloody good.
Done loads of 'normal' warped disc type jobs for me over the years but also solved some really pesky ones that have been traced to damaged hubs or wheel faces out of true. Things you'd never normally think would be a problem.
HI, im having a similar judder issue, 2017 performance. New discs and pad fitted bedded in over 1000 miles sensibly. think i had a bit of build up after 3000 miles as i was getting judder which also came up on a rolling road mot test so i kicked its head in for ten mins and that cleared them much better, its just at biting point or as you are slowing down through 45 - 30 mph that its bad sometimes i get nothing at all. more of a vibration in the car and via the pedal.
Discs removed and checked - all fine - hubs checked all fine. Genuine pads and discs fitted odd wheel a little misshapen after a pot hole collision but nothing major. so that's the next thing change the wheels......but not that bad to make the car judder when braking.
any pointers?
Discs removed and checked - all fine - hubs checked all fine. Genuine pads and discs fitted odd wheel a little misshapen after a pot hole collision but nothing major. so that's the next thing change the wheels......but not that bad to make the car judder when braking.
any pointers?
Magnum 475 said:
Wish I had some pointers. My 987s is doing this. Has had new hubs & bearings, calliper seals, rims refurbished, various pad types .. 1500 miles max before the judder is so bad that the car is undriveable.
Further investigation ongoing, after the 5th set of discs in 7000 miles, FFS.
I had the same issues on my RS6 1500 miles after its first set of discs but part exchanged the car so never got to the bottom of that.Further investigation ongoing, after the 5th set of discs in 7000 miles, FFS.
But regarding your Porsche,we also had a similar problem to you with our 997. Changed the discs twice before taking the car to Center Gravity who picked up knackered bushes in coffin arms and worn tie rods. Replaced both and another set of discs and 20,000 miles later we haven't looked back. Not sure how this affects the brakes, but it seemed more than a coincidence. Is your suspension OK?
Edited to add: CG put the discs and pads on and they are VERY particular about hub face cleaning etc. So that might have been the reason too.
Discombobulate said:
Magnum 475 said:
Wish I had some pointers. My 987s is doing this. Has had new hubs & bearings, calliper seals, rims refurbished, various pad types .. 1500 miles max before the judder is so bad that the car is undriveable.
Further investigation ongoing, after the 5th set of discs in 7000 miles, FFS.
I had the same issues on my RS6 1500 miles after its first set of discs but part exchanged the car so never got to the bottom of that.Further investigation ongoing, after the 5th set of discs in 7000 miles, FFS.
But regarding your Porsche,we also had a similar problem to you with our 997. Changed the discs twice before taking the car to Center Gravity who picked up knackered bushes in coffin arms and worn tie rods. Replaced both and another set of discs and 20,000 miles later we haven't looked back. Not sure how this affects the brakes, but it seemed more than a coincidence. Is your suspension OK?
Edited to add: CG put the discs and pads on and they are VERY particular about hub face cleaning etc. So that might have been the reason too.
Gassing Station | Audi, Seat, Skoda & VW | Top of Page | What's New | My Stuff