what do you think guys i dont really track the car just street driving? i have the 6mt so i have teh bigger brembo brakes just im replacing all the rotors and pads and this is killin me

 

If you don't track and like the looks of crossdrilled rotors then go for it. You can even get some in both x-drilled and slotted. But if you are going to track at all slotted or just plain old rotors is the way to go. Cross-drilled rotors will always be more susceptible to cracking from high heat stresses of repeated braking.

 

irotors.com has some nice looking slotted/drilled rotors f+r for brembos for $400.

 

Go slotted only.

Like dklau33 is saying, the cross drilled tend to be more susceptible to cracking (if you are tracking and get the temps up on the rotors). However more importantly the cross drilling is going to eat your pads up regardless of if it's track or street use.

 

Hmm.. that's interesting. I've never heard of cross drilled rotors increasing brake pad wear compared to non-cross drilled rotors. Care to educate me on why?

 

The drilled rotors act like a sort of cheese grater on your brake pads. That being said, cross drilling can pay benefits on heat venting, but you probably won't see it unless you are tracking your car.

 

will using a aftermarket rotor, a cheaper priced one, downgrade braking performance compared to the stock brembo rotors?

 

Not necessarily ChuckP. I'd say so long as you meet the initial Brembo specs on the rotors (diameter & width) the performance should be the same for everyday use, tracking could be an entirely different story.

There are some good rotors out there that are as good or better than the Brembos for the same price (or cheaper). For one I'd say take a look into Stop Tech or Wilwood.
http://www.stoptech.com/

 

"Cheese grater" on brake pads? How is that possible when the majority of x-drilled holes are beveled inward and flush with the surface of the rotor?

For track, I agree with dklau33 - go blanks or maybe slotted. Cross drilled are just for looks.

 

Beveled inward or not, there is no reactionary force off of something that isn't there, so the pads will bulge (few thousandths?) into the drilled sections of the rotors. When they hit the rotor again it's going to increase pad wear.

 

Wouldn't slots do the something similar?

 

I'm sure they would roneski. In any case if you're getting drilled or slotted it's usually to try to get an improvement over stock (for looks and for performance).

It's just that I've heard some guys complain about the stock Brembos. I'd hate to see someone go to drilled rotors and then find out after they are on that they are eating up his pads quick.

 

from what ive heard the xdrilled can crack from excessive stress but if it does meet the standard requirements the chances are more slim of that happening. Maybe if you got aftermarket brands not specialized in rotors then its probable. Also on slotted rotors the chances of actually having effect is unlikely unless your going 200mph. Theres mixed reviews on both so imo its all preference

 

Is the whole cross drilled/cracking issue just paranoia like plasma tv's going bad 1 year after purchase? After all Porsche 911's have had cross drilled rotors for years.

 

Okay, lets all clear a few things here.

1. Cross-drilled rotors will have a bigger chance of cracking than slotted or blank rotors when under repeated heavy braking conditions like in track days. On the street, cross-drilled rotors are fine since you won't encounter those type of braking situations like you would on a road course. Trust me, I've seen plenty of cross-drilled rotors getting cracked from track days. Have not seen any cracked slotted rotors yet. Warped maybe, but not cracked. Why do then most big brake kit companies such as StopTech recommend only using the slotted rotors for tracking?

2. Porsche, Mercedes Benz, and other high end cars use rotors that have holes in them but they are not actually drilled through. Taking a drill and drilling holes into a blank rotor will compromise the integrity of the rotor. Picture a piece of solid wood and a same piece of wood but with a bunch of holes in it. Which one is going to be easier to break? Companies like Porsche actually cast their rotors with the holes in the design. Therefore they are never drilled and the holes are in the design of the so called 'mold'. I've seen someone ghetto enough to where they took their OEM rotors and drilled holes through it in their own garage. Never, every try this at home kids.

So to answer your question about it being a myth, NO.