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      01-16-2011, 08:52 PM   #1
BMW86
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Question for those that have BMW Performance Rotors - REAR

For those that have the genuine BMW Performance Rotors in the REAR can you please tell me if your holes in the rotors are drilled all the way through or are simply indentations for aesthetic purposes. If you can post pics that would be even better.

I purchased the BMW Performance Rotors for the FRONT from Dan@United and had them installed a few months ago. They look fantastic, the holes are drilled the whole way through and I have no doubt these are genuine pieces.

I purchased the BMW Performance Rotors for the REAR from BM MINI. The first thing I noticed is that the holes have not been drilled the whole way through and are only indentations that are a few millimetres deep. I did not check the rotors and left them inside the packaging before I had them installed. What I would like to know is if these are indeed genuine BMW Performance Rotors or if I have been sold replicas.

I have attached photos for reference of the front and rears. Thanks in advance.
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      01-16-2011, 09:06 PM   #2
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I think I found my answer - http://www.southernbm.com.au/bmw-per...e-rotors-135i/
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      01-16-2011, 09:31 PM   #3
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yes, they are dimpled, but when the brake dust gets in the dimples it looks like they're drilled lol
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      01-17-2011, 08:28 AM   #4
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Nice looking M wheels.
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      01-17-2011, 11:47 AM   #5
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Interesting, I wonder why are they dimpled instead of being drilled??
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      01-17-2011, 12:13 PM   #6
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Where did u get the wheels.. Please post a pic of the whole car!!! it looks great.. Thats how the 1 should have come stock...
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      01-17-2011, 01:23 PM   #7
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They are indeed dimpled in the rear, but from what I've heard dimpled is better than drilled because it is a little less prone to cracking. I at first was a little upset that the the rears were dimpled and not drilled like the fronts, but they are both slotted which makes me happy and with the group buy pricing from Dan I couldn't pass it up.
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      01-20-2011, 11:19 AM   #8
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From conversations with Dan when the long awaited for rears (finally) became available I believe that BMW maintain these are more of a 'cosmetic' than a performance part. Hence dimpled for looks rather than drilled for function.

I was one of the addicts who waited and pressed for the matching rears for looks before ordering the set.
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      01-23-2011, 07:03 PM   #9
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Hi everyone, sorry for not getting back to you all sooner!

Quote:
Originally Posted by randomquickness View Post
yes, they are dimpled, but when the brake dust gets in the dimples it looks like they're drilled lol
Lol thanks!

Quote:
Originally Posted by Diver View Post
Nice looking M wheels.
Cheers!

Quote:
Originally Posted by doublevanosrc View Post
Interesting, I wonder why are they dimpled instead of being drilled??
Dimpled is fine but I was only worried as they did not match the front rotors which were drilled.

Quote:
Originally Posted by Stoutnj89 View Post
Where did u get the wheels.. Please post a pic of the whole car!!! it looks great.. Thats how the 1 should have come stock...
Thanks mate. I plan on doing another photo shoot again soon as my car is almost in its completed stage. I've been waiting on iCarbon to send me their hood but don't think it's going to happen!

Quote:
Originally Posted by Novator View Post
They are indeed dimpled in the rear, but from what I've heard dimpled is better than drilled because it is a little less prone to cracking. I at first was a little upset that the the rears were dimpled and not drilled like the fronts, but they are both slotted which makes me happy and with the group buy pricing from Dan I couldn't pass it up.
This is also what I've come across in my research. Dimpled still dispenses heat and is less prone to cracking but I thought they were non-genuine as they did not match the front rotors and I was under the impression they were drilled.

Quote:
Originally Posted by gadget12345 View Post
From conversations with Dan when the long awaited for rears (finally) became available I believe that BMW maintain these are more of a 'cosmetic' than a performance part. Hence dimpled for looks rather than drilled for function.

I was one of the addicts who waited and pressed for the matching rears for looks before ordering the set.
Dimpled rotors are actually comparable in performance to the drilled, I'm just surprised BMW decided to differentiate the aesthetics of the front and rears.
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