Warping discs

Yup. Also. When fitting new discs it's recommended to mark a hole and stud. Fit the disc and if loose use 2/3 nuts to retain. Then use a dial gauge to measure runout. Remove disc and move round by one hole, check runout. Repeat for all possible positions. Fit so that runout is least and recheck. If it's not what it was the first time there was still muck on the hub face and some may have been transferred to the disc, clean both and start again.

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I'll check that out.

Presumably checking for more wear on one side?

That sounds a bit heavy going for me ;) If I get through this set of disks as quickly as the last 2 lots then I'll get the local mechanic to check that out for me.

Thanks for all the advice. Can heavy braking and footbrake while stationery cause warping?

Bigus

It's the Rover 600/Honda Accord brake system - it's S**TE :) Because the discs are mounted behind the hubs, there is no "central mass" to absorb the heat - so they warp very easily.

Both can cause warped discs.

My stock discs were warped when I bought the car. I've replaced em with Black Diamond Drilled & Grooved, and EBC Redstuff pads, and they've been fine for the past 8 months :)

NEVER use "footbrake while stationery" - that's why you have a handbrake !

Don't use either if you've just come off a track, can't the handbrake seize on?

This is what I was wondering :)

This is also what I was wondering - ie: if there were some particularly tough discs that were better at resisting warp.

Bigus

Unlikely - you'd need a SERIOUS car in order to get the rear brakes hot enough for that to happen.

Anyhow, if you've just come off a track, you've just done a couple of cooling-off laps. Hot-lap, straight off and stop, is a recipie for disaster, not just for your brakes :)

Had my rears spitting and pinging at me today.

I get that sometimes - I find it's the curry that does it ;-)

Bigus

They're reasonable money - give em a go. IIRC, the discs and pads cost me about £200 from