A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

Slotted rotors, which way should slots face?

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Old 09-21-2005, 11:43 AM
  #11  
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Default doesn't matter unless the internal veins are directional... ala ECS 2 piece, Stoptech, etc...

OEM A8 rotors are non-directional.
Old 09-21-2005, 11:57 AM
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Default not really. Just saying directional vanes=quality rotors.

non-directional are much cheaper and do not usually work as well. You ever notice Brembo high grade and other cross drilled and/or slotted rotors of that sort are directional? Yes, that is possibly why I have 8+ years on my Brembo cross-drilled rotors will no cracks or ill effects.
J
Old 09-21-2005, 12:48 PM
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Default

did that to. so the slots "breath and catch air" doesnt really matter if you ask me as well
Old 09-21-2005, 01:41 PM
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Default My OEM Honda rotors lasted 8 years.

Woooo Hoooooo! I checked...non directional.
Old 09-21-2005, 02:46 PM
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Default OEM Honda rotors are not cross drilled or slotted.

I was not talking about regular OEM rotors. Yes..I have had two H cars with rotors that are OEM...and they lasted about that long also. My point about directional was in regards to aftermarket cross drilled and/or slotted. And about those specifically, the non directional are cheaper quality. I also can get H car rotors for $15 a piece that have held up to the test of time as well. I get Honda OEM parts at wholesale. Apples and oranges is all this talk seems to be.
J
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