Pics?
I drilled mine on an Explorer Sport I used to have. It had brakes that were too small to begin with, so they would fade after a few hard stops. After drilling them, the difference in braking performance was very noticable. They would still fade a bit, but it took a lot longer. They did not wear any faster, or wear out pads any faster than before. I drilled them in 2003, and 4 years later, they're still on the vehicle (though I don't own it any more)..
i do, and about the only good thing about them is looks. they eat pads like no other. so i would think about the 13'' brake upgrade. sorry i dont have any pics though.
+some tracks wont let you run with them. since one breaking would obviously be to say the least..bad.
Chevy has actually run some tests on the new Corvette and found that their drilled rotor option did increase braking force at speeds above 100MPH. For some reason the drilled rotors had more bite. However, under 100, the standard plain faced rotors outperformed the drilled rotors.
Drilling rotors does NOTHING for performance. A lot of guys claim they helped dramatically but the fact is you can go to Autozone, buy some $10 rotors and slap them on and notice a difference over worn out rotors. Does that mean the $10 rotors are better? No, it just means you have new rotors. Over time, they will suck.
Crossdrilling is for the exotic race cars which have exotic pads that release gas under hard braking. Modern street cars you buy at a normal dealer do not have these pads, so there is no need. The holes are drilled perpendicular to the flow of air so there is zero airflow through them anyway. All the cooling comes from the center vanes of the rotor drawing air from the hat area and flinging it outwards.
Under hard braking, say 100-0MPH, a solid faced rotor will outperform a crossdrilled rotor. Reason is mass. The solid rotor can absorb more heat and has more surface area to contact that pad. That's it. That's the physics behind braking.
Slotted rotors do help "wipe" brake dust away, but they also do nothing for cooling.
With that said, i think they look badass. Since the everyday normal street would probably never see extreme abusive braking, they are fine. I have autocrossed my car and that is the ultimate test of brakes. I've never gotten my brakes as hot on the street as i did at the autocross, and i ran my plain-faced 13" brembos while my friend ran some drilled 13" rotors. His cracked and are in the trash after a day of abuse while mine performed lovely all day long.
I also would never run cross-drilled on a truck. You definitely want to rotor to have as much mass as possible to absorb the heat generated from braking. Heavy trucks make a LOT of heat
are rotors at autozone really $10??
drilled rotors crack but provide venting for the heat
yup have them up front:
Drilling rotors does NOTHING for performance.
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