Drilled / Slotted Discs direction

TransAmDan

TransAmDan

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Staff member
I have always installed my slotted discs in the direction that it would brush any debris from the pad into the outer part of the disc, therefore working with the center-fugal effect. However visiting many car shows people have them on opposite to me. Who is right?

Found this interesting picture on the inter-web
rotor-direction.jpg

This info was from:- Which direction do my new drilled and slotted rotors go

Which I would agree with. I wonder why so many are installed the opposite way around.
 
I feel a stream of photos on this thread from cars we spot thats the other way round.
 
do they make a difference on a road car. anyone swapped good plain discs for these?
 
My personal opinion is that drilled and slotted rotors are a waste of money.
Brakes need to dissipate heat to work effectively and anything that reduces the surface area impacts the ability to do that.
Not to mention that stress cracks will always occur at the weakest point and this is typically the point where the rotor is thinnest (the slots) or where they have been drilled.
Not to mention that the erosion of the brake pad is significantly faster when using slotted rotors so brake dust is more of a factor.
My car has slotted disks fitted but they were on there when I bought the car. Genuine Mopar disks do not feature slots or drilling and these are what I will fit when the time comes.
 
this is what i was thinking too. but thought i might be missing the point
 
They are ment to be a performance add on, however you rarely get in to their performance benefits unless you are on a track day.

I like the look of them, and had them before. These are my new ones.

I can see where the confusion of sides can be if you buy American disks and put them on a RHD car.
IMG_20190330_121957.jpg
 
IMG_1539.jpg
My gen4 camaro brakes fitted last year with carbon ceramic pads these were a vast improvement on the standard ones i took off and exceptional under high speed braking
 
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