Slotted Rotors = Increased Brake Dust?
 

I just gotta ask.
I've been searching around, and I understand the purpose of slotted rotors is to keep the pad face "fresh?", but I haven't seen anyone actaully come out and say "slotted rotors will result in more brake dust over stock".

https://www.rx7club.com//search.php?...by=&sortorder=

My understanding of the original thought behind slotted rotors was to allow the gas generated by the friction of braking to escape and not serve as a "buffer" between the pad and the rotor.

According to the guys at Carbotech, this is really a historical issue - the binding agents used in racing pads a few decades ago did produce a significant amount of gas. However, modern pads' binding agents really don't have this problem. They recommend plain rotors, period.

StopTech and AP, however, both recommend slotted rotors for the track, with the rationale that the slots allow removal of gas and "debris" - i.e. brake dust. I can't find the source right now, but I know I have seen rotor manufacturers say outright that drilled or slotted rotors will wear pads faster than plain rotors.

Sounds like both plain and slotted rotors make sense for both street and track, with slotted causing faster pad wear. Keep the drilled rotors for a street/show car that isn't going to see repeated high temps.

Yes they will, well atleast mine did.

Justus

In general, yes they do.
If pads are the same, and everything else is kept the same with the difference being solid versus slotted rotors, it should dust more.


-Ted