X-Drilled vs Slotted Rotors in Rain ... which is better?
06-24-2003, 09:20 AM
#4
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that doesn't make sense.
I believe slotted are the best for all-around driving (street, track, rain)
<img src="http://pages.sbcglobal.net/paul.bauer/_images/4000_1.jpg">
<img src="http://pages.sbcglobal.net/paul.bauer/_images/installed2.jpg">
<img src="http://pages.sbcglobal.net/paul.bauer/_images/drilled1.jpg">
<img src="http://pages.sbcglobal.net/paul.bauer/_images/4000_1.jpg">
<img src="http://pages.sbcglobal.net/paul.bauer/_images/installed2.jpg">
<img src="http://pages.sbcglobal.net/paul.bauer/_images/drilled1.jpg">
06-24-2003, 09:22 AM
#5
Slotted. Without a doubt!
cross-drilled used to be mainly for weight reduction. The slotted grooves will work just as well in the rain.
cross-drilling reduces the strength of the rotor, reduces braking area, and adds turbulence to the air in the vains so it doesn't get evacuated from the center of the rotor as well. In addition, the inside of your rotor gets caked up more with brake dust!
cross-drilling reduces the strength of the rotor, reduces braking area, and adds turbulence to the air in the vains so it doesn't get evacuated from the center of the rotor as well. In addition, the inside of your rotor gets caked up more with brake dust!
06-24-2003, 09:33 AM
#6
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drilled. trust me
drilled rotors will evacuate the water whereas the slots will retain them.
check back in the rainy season and read about all the slotted rotor owners post "dammit my big brakes suck in the rain!"
But then again, the co. friction in the rain goes way down so............. whatever.
check back in the rainy season and read about all the slotted rotor owners post "dammit my big brakes suck in the rain!"
But then again, the co. friction in the rain goes way down so............. whatever.
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06-24-2003, 09:46 AM
#8
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heehee, that's actually happened before, on self installed brakes
I worked at a specialty brake shop, everytime it rained we'd get flooded (har har) with calls about "MY BRAKES WONT BRAKE AND I THINK THEY ARE BROKEN HOW DID I BREAK MY BREAKS FIX THEM ARGH!" 99% of those calls were slotted rotor owners. Then again, we always recommend slotted for the strengh and pad issues
Backwards slotted rotors are bad mmmkay.
Backwards slotted rotors are bad mmmkay.
06-24-2003, 09:57 AM
#9
AudiWorld Super User
Define backwards...
It's my understanding slot direction has more to do with the style of internal venting (curved v. straight).
IIRC the rain problem addressed on this forum a while back about aftermarket brakes was discovered to be improper bedding.
<img src="http://www.dba.com.au/Forum/slot_direction.JPG"><ul><li><a href="http://www.dba.com.au/Forum/slot_direction.JPG">DBA Slot direction</a></li></ul>
IIRC the rain problem addressed on this forum a while back about aftermarket brakes was discovered to be improper bedding.
<img src="http://www.dba.com.au/Forum/slot_direction.JPG"><ul><li><a href="http://www.dba.com.au/Forum/slot_direction.JPG">DBA Slot direction</a></li></ul>