Trick

I purchased some Pagid discs and pads and fitted them myself.
Ive fitted plenty of discs before so I know ive done it properly.

I.e. wire brushed contact areas etc, bedded them in properly after fitting etc etc.

Anyways, after about 2 months of using them, they now feel slightly warped in that there is some juddering on braking. My dealer had a look and said there are signs that they could be warping.

Before i phone the guys that supplied the discs, (performance braking) where do you think I stand in terms of getting them replaced? what can cause this warping?

yoza

Do you jet wash your wheels?

If you do it when they are hot or warm they warp.

Aztec Performance Ltd

iTrader: (234)

I'm having same problems with mine. Brought mine from Midland Impreza. They deny they could ever warp but the are.

Let me know how you get on.

Trick

yeah i do jet wash, but never clean the car when it is warm or hot.

currymonster

I had a set of pagid disks from midland imprezza that warped. They replaced them without any hassle, just left me with the xtra fitting charges, but ho hum. Incidentally, the pagid r 4-2-1 pads i had on b4 are better than the ds 2500 i have on now, both are dusty buggers.
Overall i was dissapointed , not much imporvement over standard. So I bagged on of the last of the Brembo group buy kits. Just have to save for 17 inch wheels to go over them, grrr,

Good luck with the disks, cal

greasemonkey

The comment earlier about not washing car when discs are warm is perfectly valid, as is that you shouldn't hold the car at a standstill on the footbrake, as the temperature differentials caused can warp them. Obvious to most, but probably bears repeating, just in case.

IMO all these one-piece so-called "Group N/Group N+" discs are a waste of money. All of them are prone to warpage, primarily because they share the same flawed basic design of the OE ones.

The only real answers are either going for a complete bigger brake system, or, if you want to stick with the OE calipers, a two piece rotor/bell setup, like the DBA 5000 series or Performance Braking's forthcoming version.

If you don't want to go to those lengths, you are probably better off with an OE spec disc, as the lack of grooving increases the amount of material in the (thinner than ideal) discs, increases the frictional surface area, and prevents heat concentrations across the disc surface, thus reducing the chance of warpage.

Even if they do eventually warp, you won't be quite so worried if they're only costing you £35 each.

Trick, I suspect you will receive a sympathetic reception from Performance Braking. They're knowledgeable people and are aware of the limitations of these discs. Give them a ring!

[Edited by greasemonkey - 9/17/2003 3:31:52 AM]

Trick

cheers guys.

i`ll let you know how i get on..

Frank Teeuwen

Instead of buying new ones you can also just take them off and grind off the toplayer, takes about 3 minutes per disc and every decent wheelshop should have the machine, safes a bit of money if there is no warranty.

Have done it a few times on different cars and always worked.

Rgds

Frank

PPPMAT

I've had real problems with my discs (sti7) and they have just been refaced - this seems to have done the trick (so far)

Matt