Front brakes

[api330]

, May be a daft question but if i buy some new front disc's (rotors) from audi dealer do they come with the bells or do you swoop bells over and if you do get bells with audi items can you buy just the disc's (rotors) from any where else, Many thanks.

[sonny]

They come with the bells

[api330]

Thanks for that, Has any one tried skimming the disc's ?. My disc's are only about 2000 miles old and have no lipping on them at all but i have a slight judder though wheel on braking, I have had a chat with local engineering company and they will skim them for me if i remove the bells, Was wondering if any one has tried this with any good or bad results or should i just buy some new ones which seems a shame with the ones fitted having so little wear in them, Cheers,

[sonny]

A few have skimmed there discs on here. I would imagine new brake pads are needed if the original ones have been messed up.

Brake judder is normally caused by imbalanced discs i,e one side more worn than the other, this can happen by driving on circuits and also a build up of compressed brake dust under the pads. Try giving the brakes a good going over by driving the car hard and by doing some heavy braking exercises, This should alleviate the problem.

[adsgreen]

only 2000 miles on the discs - my money is on brake pad meterial transfer thickness variance.
(ie, too light on the brakes, sitting at traffic lights holding on the footbrake).

[api330]

Only had car about 4 months so don't know how it's been used only mileage in last couple of years is very low, I think i will give the skimming a go and then do the using brakes a bit harder and not standing in traffic with foot on brakes as has been suggested on here, Many thanks for all info.

[adsgreen]

Just make sure the people doing the skimming can handle floating discs - much harder to skim as not rigidly fixed to the hub.

[supersi]

Had mine skimmed a few times due to warping, no need to change pads IMO but is good practice, there soon bed in, you can dress the pads back to flat surface but IMO not really needed

I did find if oem is warped and you do skim it soon comes back, I was never sure if due to poor disc or when heated just return to there warped state ... Hence why had the LOBA b7 disc upgrade made

[P_G]

The Brembo design is poor in so many ways and expensive for what it is. Not helped by the fact they are using Chinese steel.

[sonny]

Poor design what makes you say that

[Terry1948]

Sonny I bet your glad that you did not have ceramics £££££££££.

[sonny]

Only put them on in May 2010.

[Timster]

Poor design what makes you say that

sonny.jpg (85.7 KiB) Viewed 2024 times

Mate, you need a new stylus !
(does that age me?)

[Terry1948]

Supersi is right I had my brakes skimmed but the problem soon came back. The skimming was fine but I think the metal must have a memory and when they get hot enough the high spot returns. A lot of people must find it hard to give their brakes a thrashing if you spend time in traffic gently braking. At the moment the loba discs are performing great and I also do a lot of gentle driving because passengers do not appreciate peeling themselves off the front seats and windscreen. Smooth driving=faster times. If the lobas handle this then it is money well spent.

[adsgreen]

If it is caused by light driving then it really doesn't matter what the disc is.
ALL steel discs WILL be affected by brake pad thickness variation if allowed to. It's the basic physics of how modern brake discs/pads work that you simply can't escape.

It surprises people (as it did me) just how quick this can take effect. When it happened to my VXR8 i had only covered about 1100 miles. New discs and problem back within 1300miles. Had somebody look at them in a lab, found out about what was going on, changed my driving style and never had a problem since.

You don't have to thrash the discs to an inch of their life just some slight tweaks. For example, sitting still with foot on the brake is easy to avoid. For slow stop start traffic I agree it's trickier but it can be done easily enough. A rough guidline for the force is the amount of engine braking you get in first from high revs... If you need to slow down at a rate slower than this then just wait a bit longer.