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lol is my drilled/slotted rotors on the correct side?

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Old 03-22-2012, 09:16 PM
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Default lol is my drilled/slotted rotors on the correct side?

i know these are directional, and i beleive i had them on the wrong sides.....i switched them to this.....this rotor is the drivers side rear

also, i am using the hawk eps middle stage pads that came in a blue box, and zinc coated rotors from ws6 store.....if anyone is using this combo, see if you can answer my question.......for about 3-5 minutes i was ripping withthe ss, not really pushing limits but being a little rough on the brakes.....when i got out afterwards, this strong stench of brake pads is in the air.....neither front pad smells, but both rears do......is this normal?
Attached Thumbnails lol is my drilled/slotted rotors on the correct side?-1332456788633.jpg  
Old 03-23-2012, 10:49 AM
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I believe that looks correct, if its on the drivers side
Old 03-23-2012, 10:55 AM
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I thought its suppose to be the other side?
Old 03-23-2012, 12:41 PM
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The venting inside decided the direction. If your your car is moving forward the vents should be angled towards the back. If the vents are strait out then they are non directional rotors.
Old 03-23-2012, 12:53 PM
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I thought they were correct earlier, but I just looked at mine and its opposite of your pic, maybe they are right maybe not, mine have been on since 05' so I really dont remember the instructions as for which way
Old 03-23-2012, 02:36 PM
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Those look backwards to me.
Old 03-23-2012, 02:59 PM
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look backwards to me too
Old 03-23-2012, 03:46 PM
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Its backward
Old 03-23-2012, 05:05 PM
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there is no way to tell from the picture. different manufacturers produce the slots and holes in different directions. as mentioned above the direction of the vanes determines everything.

Last edited by Nastyc4; 03-23-2012 at 07:02 PM.
Old 03-23-2012, 07:03 PM
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here is my drivers side front. Anyone want to tell me its backwards?

Old 03-23-2012, 07:07 PM
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that is correct. the vents are angled towards the back of the car
Old 03-24-2012, 11:14 AM
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the fins inside are not angled in any way........i found out that they are backwards and need to be switched
Old 03-24-2012, 11:57 AM
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If the fins are straight they are Uni directional . Whichever way the slots appeal to you go for it.
Old 03-24-2012, 01:04 PM
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The slots need to be digging "into" the pad.

Do this:

1) Stand facing the driver's side of the car.
2) The drilled holes should look like they are curving from the center (hub), towards the front of the car.

In other words, if you were moving forward, the drilled hole at the TOP, OUTSIDE of the rotor should be the first to make contact with the caliper / pad.

The rotor you have pictured is a passenger side rotor, NastyC4

I've always been taught, when it comes to drilled / slotter rotors, it should appear that they "dig" into the pad, not "slice"
Old 03-24-2012, 02:47 PM
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Originally Posted by dr_whigham
The rotor you have pictured is a passenger side rotor, NastyC4
Look closely at the vanes on the rotor. Maybe I should take a pic of the 'L' stamped on the hub or you can argue with BMW for designing the m with backwards rotors
Old 03-24-2012, 03:13 PM
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I can see the vanes on the hub perfectly clear.

I'm familiar with how a directional rotor works. The one's I've always run look EXACTLY like the ones in the aforementioned photos.... You're drilled holes were throwing me off; Completely. They're drilled opposite.


http://www.zeckhausen.com/how_to_pro...all_rotors.htm
Old 03-24-2012, 03:41 PM
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If the vanes inside the rotor are straight, you can run them anyway you like.

The vanes are what determines left or right. The slots or holes can go any way you prefer, they are only there to look cool anyway.



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