ACourtney wrote:Hi Rich,
I've always found the Greenstuff pads too hard for a Midas. I guess they're designed for a heavier car (Metro!) which will put more heat into them.
The standard EBC pads seem okay as do standard Mintex pads, even after a dozen laps around Castle Combe.
The real secret to good brakes is to bed the pads in well and to create a "transfer layer" on the disc surface.
Probably teaching you to suck eggs, but I'll describe it for anyone who has never come across the procedure:
After the pads have been on for a hundred miles or so, find a clear straight road (so you probably need to do it at night/early morning) - take the car up to 60mph and brake hard down to 20 (do not stop), accelerate back to 60 and brake again to 20, do this half a dozen times in all and then continue driving for at least 15 minutes to let brakes cool before stopping (and to disperse the smell of the pads!). You want to avoid having to stop during this period otherwise you risk localised overheating causing warping or cracking of the disc.
After this procedure the disc will have a visible mottled grey layer - the transfer layer - and the pad bite will be sharper.
Regards,
Alistair
Hi Alistair,
Thank you for that, I've always done something similar but never actually seen it written down.
I popped into Halfords tonight to see what they had on the shelf only to find they don't even list the Metro any more! The Greenstuff pads are on their last legs now and I wasn't going to use the same again as I'm sick of cleaning their dust off everything. I'll have a dig around for some Mintex.
As an aside, I always found the non-ventilated discs better than the ventilated versions. Is this just down to them being over cooled for the work they are having to do?
Rich