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      02-28-2013, 09:56 PM   #1
dmw16
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PFC01 Pads Making Sparks?

I just installed a pair of stoptech st40 calipers and 355mm rotors on my E46 M3. And tonight I took it out to do a few 60-5 runs to bed the pads in.

Here's the thing, from the passenger side I saw sparks under heavy braking.

Please note that the rotors have about 500 miles on them using the stoptech pads. So is this normal?
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      03-01-2013, 07:41 AM   #2
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Are the pads new? If so, that is totally normal. Alot of times there is sediment, or the edges are not chamfered which causes the sparks upon bed-in. Either way, I wouldn't worry about it.

I've done a bed-in before many times on track pads with non-chamfered edges and it's a spark show at 10pm at night

Is it making a loud grinding noise, or does it sound normal?

Chamfered:



Non-chamfered (which is what you may have)

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      03-01-2013, 07:57 AM   #3
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Thanks for the info.

They aren't making any particular noise. Yes, the pads are brand new and I believe they aren't chamfered. So I suppose that's what's going on.

It seemed a little weird that they weren't sparking from both sides, but everything seems normal otherwise - no pulling or anything.
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      03-01-2013, 08:21 AM   #4
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Quote:
Originally Posted by dmw16 View Post
Thanks for the info.

They aren't making any particular noise. Yes, the pads are brand new and I believe they aren't chamfered. So I suppose that's what's going on.

It seemed a little weird that they weren't sparking from both sides, but everything seems normal otherwise - no pulling or anything.
Then, yes, that's what it was. Carry on hooning and enjoy that BBK
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