If slotted rotors are suppose to be better, then why is every Ferrari, Lambo, Porsche, AMG, etc come from the factory with drilled rotors?
Brakes - slotted vs drilled?
- Thread starter CL65 Captain
- Start date
I think styling but my exporter in japan says in only has a diffrance on track not on the road
I have cross slotted drilled rotors...LOL
ok seriously though, I have both cross drilled and slotted rotors
stops on a dime
)
ok seriously though, I have both cross drilled and slotted rotors
stops on a dime
)
btcog82 said:I have cross slotted drilled rotors...LOL
ok seriously though, I have both cross drilled and slotted rotors
stops on a dime
If you get Firestein tires, they will pick it up too! :biggrin:
* and if any of you PC guys give me any crap about my joke, I am a "member of the tribe" as well as equal opportunity offender.
In NSX case, Slotted is better for street/track use, because the car is light. Perhaps if you have a 4000 plus lbs super car, you may need drilled rotors to help cool it off. Drilled rotors has a reputation for cracking under extreme condition.
Some rotors on high performance cars were originally cross drilled to counter brake pad gas producing a cushion between the rotor and brake pad. Modern brake pads no longer have this problem. Current cross drilled rotors are more a function of style and factory tradition than braking effectiveness. However, they will provide a bit better initial bite and cleaner rotor surface than a regular vented rotor. Slotted rotors even more so. Slotted and cross drilled rotors will be fractionally lighter than a comparably sized regular vented rotor.
Rotors are heat soaks. Because slotted and cross drilled rotors have less material to soak that heat up then they may actually prove less effective at cooling off the braking system? of a 4000lb vehicle.
There is some truth in drilled rotors having a rep for cracking around the hole edges. This happens when the hole edges aren't chamfered or if the holes aren't cast into the rotor.
Stoptech has a good FAQ: http://www.stoptech.com/tech_info/faqs.shtml#15
FWIW, I use slotted rotors on every car we own: from our Tahoe and Yukon to the Lexus and NSX.
Rotors are heat soaks. Because slotted and cross drilled rotors have less material to soak that heat up then they may actually prove less effective at cooling off the braking system? of a 4000lb vehicle.
There is some truth in drilled rotors having a rep for cracking around the hole edges. This happens when the hole edges aren't chamfered or if the holes aren't cast into the rotor.
Stoptech has a good FAQ: http://www.stoptech.com/tech_info/faqs.shtml#15
FWIW, I use slotted rotors on every car we own: from our Tahoe and Yukon to the Lexus and NSX.
Note the cars you list have cast in holes in their rotors, not drilled. Holes in the rotors will reduce rotating weight, give an edge to help the clean glaze off the pad surfaces and give a look consumers desire. These cast in holes are not any more likely to crack than a slot, they all fail either from wear or heat in the end. On the other hand, real drilled rotors do crack very quickly from the internal stresses created by drilling into the surface of the rotor.CL65 Captain said:
Personally I run slotted rotors on my NSX, smooth rotors on everything else. The slots help break the glaze on the track pads I run on the NSX, for street applications, this just makes the pads wear quicker and I never get the pads hot enough to glaze them on my Tacoma PU:smile:
thats my favorite combo love the effect they give!btcog82 said:I have cross slotted drilled rotors...LOL
ok seriously though, I have both cross drilled and slotted rotors
stops on a dime
