Rotors Are on Backwards

[LingLing]

While I was at Tom's last, he pointed out that the slotted rotors are on backwards :lol: I'd like to keep them since they came on the car when I bought it and for the fact that they are Brembo rotors, but if I switched them around would it cause any weird vibrations?

[Swifty1638]

Shouldn't. Post a pic of them installed right now. I doubt that Kevin or Mark would install them backwards, but hey, we all make mistakes.

[LingLing]

I just ran out and checked and they are on backwards. The highest point of the slot is leading, not the lowest. I always thought they looked kinda goofy hahaha. I'll have to switch those around when I pull the transmission.

[cmspaz]

I don't think it honestly matters all that much. They do their job whichever end leads...

It's the internal cooling vanes that matter.

[LingLing]

After I did some more digging on the intr0netz it sounds like it varies what brand they are. Apparently some brands are designed to be the opposite way of what you'd think they'd be. That, I never knew.

[Matt D.]

There has been talk forever as to which way the slot should go, but there is no definitive proof that one way works better or worse than the other. I had always been a fan of the inside of the slot leading so it acts like it would be pushing whatever material and gas it's scraping away toward the outside of the pad and rotor, but whatever.

[LingLing]

I had always been a fan of the inside of the slot leading so it acts like it would be pushing whatever material and gas it's scraping away toward the outside of the pad and rotor, but whatever.

+1, That makes the most sense to me too. But I have no idea whether these are the type of rotors that should be like this, or if they were accidentally put on backwards.

[tpunx99GSX]

Thinking Logically the leading should be the inside, Mainly like matt said, you want the dust/gasses/heat to be pushed outward away from being trapped towards the middle. Unless you do a lot of backwards racing like i do.
Ive actually pointed this out on not only jasons car but another guy in CAs car as well. Unsure how that mistake is made.

[LingLing]

Yep, I'm with ya there, too Tom. I always thought the highest point was suppose to be the trailing end. I'll probably end up switching those around when the trans comes out.

[Matt D.]

+1, That makes the most sense to me too. But I have no idea whether these are the type of rotors that should be like this, or if they were accidentally put on backwards.
I've noticed that some (possibly cheap?) rotors are all made in one direction, so there is no differentiation between left and right, they all point the same direction, so one side of the car will be one way and the other side will be the complete opposite.