BRAKE SHUDDER ISSUE

[Damo]

Anyone know the place to go in Sydney?

Southern suburbs (The Shire and surrounding areas) if possible?

[teebone]

Feels like I now need my 3rd skim at 30K kms of relatively moderate driving and it looks like the QFMs are the way to go from recommendations here. I will get the dealer to skim (probably the last time before replacement) but want to try and change over the pads myself afterwards to avoid any potential warranty discussions which might arise (Hopefully there wont be a next time!).

I have never changed pads on an Aussie vehicle before - is it a simple job with no special tools needed to remove the pads?

Also, which type of QFM pad are being recommended? I found this list (autospeed):-

“QFM

One of the most popular types of QFMs is the comp series:

Comp 02 - This entry level Comp series pad gives good overall performance, very little wear on rotors, best suited to light sports or performance cars.

Comp 03/06 - Both give very good performance with a low wear rate. They're very good for heavy high performance road cars and highly suitable for rally cars. Excellent low temperature performance (0.38 coefficient of friction) with a temperature range of up to 700 degrees C. The Comp 06 differs by having a cold coefficient of friction of 0.40 and a hot coefficient of 0.47.

Comp 9 - This is a very high friction compound with a low wear rate. It is a highly suitable race or rally compound. Even better low temperature co-efficient and improved high temperature performance that extends 50 degrees further (to 750 degrees C).

Comp 15 - The Comp 15 has a low temperature coefficient of drag of 0.45, a high temp coefficient of 0.49 and a temp range from 0-770 degrees, making it a highly suitable race compound.

RB74 - This is a pad that's been well proven in sprint races under cars such as HSVs, WRXs and other turbo cars. Creating little wear, it gives a coef of 0.43 at up to 500 degrees C. It also works well on the street, with very good low temperature effectiveness.

RB62 - This pad is ideally used on the back of cars fitted with RB74s at the nose. It's another organic/metallic pad that gives a co-efficient of friction of 0.41 at up to 450 degrees C. It's very similar to the RB74, except it is a bit "lighter" in its compound.”

or are there others to choose from.

[ktford]

Teebone,

I think you'll have no problem changing though I'd just get the dealer to do it while he skims your discs.

Barring (waxyjj) we're all running the "Taxi" packs & thus far are happy some (Goldie) have done 20,000k';s plus.

I Believe that (waxyjj) is happy with the premium grades htat he's got but you'd be betted off contacting him direct.

Scotty

[tab]

Do you need to worry about the skimming if you are changing the pads to QFM anyway? Goldie mentioned the other day that he didn't bother - just slapped the new pads on and it eventually removed all the resin that the poxy factory pads left behind. This was going to be my plan at the 15k service anyway.

kt, did you do the same? Please flame me if I'm speaking out of my ass and don't know what I am talking about. (I love it when you talk dirty)

Trent.

[turbotom]

I've taken the advice of the forum and fitted the QFM pads on freshly machined standard rotors....  I'll use this setup for a little while, and then fit a bigger set of slotted rotors and calipers.

For those in SA wondering where to source QFM pads.... 

North East Nissan is the SA agent....  all pads are $59 a pair.

Whers my commision???

Do I know you?

oh!

You aren't the person I think you might be, are you?

Do you like curry? :lol:

[turbotom]

Do you need to worry about the skimming if you are changing the pads to QFM anyway? Goldie mentioned the other day that he didn't bother - just slapped the new pads on and it eventually removed all the resin that the poxy factory pads left behind. This was going to be my plan at the 15k service anyway.

kt, did you do the same? Please flame me if I'm speaking out of my ass and don't know what I am talking about. (I love it when you talk dirty)

Trent.

If you have any shudder at all, you do have to machine the disks to remove any high spots in the rotor surface.

Fitting new pads on a used but straight (non-worped) rotor should be OK, if you don't want to spend the money....

But the ideal scenario is to machine the surface so that the new pad material can bond into the surface of the rotor for maximum performance.

[twinxrs]

Also, which type of QFM pad are being recommended?  I found this list (autospeed):-

“QFM

One of the most popular types of QFMs is the comp series

So are any of these "comp series" related to the "taxi" pads ?

Do the comp pads have similar characteristics to the taxi pads ?

ie no/little dust, no shudder etc

[ktford]

kt, did you do the same?

Trent,

I had my rotors skimmed at my 30k service as I was getting some shudder back & had Bryan Byrt fit the QFM's, I'll save the dirty talk for later, promise

Scotty

[tab]

I don't (as yet) have the shudder, but as a renowned mechanic was showing me the other day the difference in his front (fitted with QFM) and back (factory pads) discs, and explained to me that it is actually the resin from the factory pads that accumulates in spots and causes the shudder. And you can actually notice the difference in colour on the surface of the disks and behind each hole in the rear discs you can see a trail of gunk.

Hence, putting better pads on gets rid of the resin after a few hundred km's without the need for machining the discs at all.

I'm not a mechanic, and it makes sense to me (which in itself is a major achievement) so I’m convinced.

But hopefully the little suckers will last another couple of thousand k’s without getting the shakes in any case and all will be sweet!

Trent.

[AWW XR6T UTE]

My ute had some brake shudder, at the 30,000 servive the other day they machined the disks, and the difference that it has made is incredible, now it's very smooth, I probably didn't realise how bad it felt before, because over time you get used to it. I'm now getting the QFM pads, for the super-x $55, premium $75 & super premium $95. Because I don't want the shudder back. (I'm going for the premium pads)