Help-urgent brake pads smoking - Mercedes Benz SLK Forum

Tires, Wheels, Brakes & Suspension Discussion and information regarding tires, wheels, brakes and suspension.

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#1 Old 09-09-2015
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Help-urgent brake pads smoking

Guys
I recently changed put Brembo brake pads in my car. About 400 miles have passed since they've been in.
This evening I took the car for a spin to clear my head and that involoved LOTS of hard, late braking. I stopped at a traffic light and there was medium density smoke coming off the front pads and discs!!!
I put some cool water on them when I got home and it evaporated within seconds.

Is this normal??? HELP!!!
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#2 Old 09-09-2015
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Very hard driving/braking will cause the discs and pads to become VERY hot. Stopping just after such a punishment can cause the pads to smoke. Quite common in race cars when driving into the pit-lane but I have also experienced that is normal saloon cars after tough driving.

Given that the smoke came from both sides I would say that it's quite normal. Keep up the fun, go full out, but drive the car more moderately for a while to cool down after the next punishment. Don't pour water on the brakes. You could crack/warp the disks.
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#3 Old 09-10-2015
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Originally Posted by Magnus Bj View Post
Very hard driving/braking will cause the discs and pads to become VERY hot. Stopping just after such a punishment can cause the pads to smoke. Quite common in race cars when driving into the pit-lane but I have also experienced that is normal saloon cars after tough driving.

Given that the smoke came from both sides I would say that it's quite normal. Keep up the fun, go full out, but drive the car more moderately for a while to cool down after the next punishment. Don't pour water on the brakes. You could crack/warp the disks.
Took the car out this morning for another spin and the brakes seem fine and no smoke today. It's also worth noting that the "new brake smell" I had before is now gone

Thank you for putting my mind to ease!
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#4 Old 09-14-2015
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Just closing this off, the brakes are now performing somewhat better than before. I have given them a solid thrashing over the weekend around the country roads of Ashby De La Zouch(sp?? ) and if they were ever going to smoke again, they would've. They are fine, no smoke, no new pad smell and are sharp.

Maybe they were burning off the storage oil from factory? Who knows.. but it's sorted... PHEW!!!!
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#5 Old 09-14-2015
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Certainly four years ago, Brembo worked with Mintex to produce their pads - I can only imagine nothing has changed. Mintex can get quite soft and combined with a super hot disc will smoke. Nothing to worry about.

However, I totally concur with someone above, do not, do not pour water onto discs if you think they are too hot especially if you have cross drilled discs. Leave them cool naturally.

To lessen the unsprung weight on our hill climb car, we used to use the smallest possible unvented discs. With these there was of course minimal heat transfer and sometimes they would get orange hot very easily. We once used some drilled discs that I think we were given for free, or might even have picked them up after being discarded by someone. I remember in no time at all lots of small cracks appeared around all the cross drilled holes, and this was from natural cooling!
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