Slotted vs. drilled rotors
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Joined: Apr 2007
Posts: 69
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From: SHREVEPORT LOUISIANA
Slotted rotors vs cross drilled
In the latest issue of Road&Track magazine, the M3, ZR1, Ferrari F430, Jag XKR, and 911GT3 were all compared to their racing counterparts.
In almost every case, the street version has drilled rotors while the racing version has slotted rotors. It seems obvious that the manufacturers include drilled rotors only because buyers "think" they are effective, sporty-looking or ?
I don't blame anyone who feels this way when it comes to choosing rotors for their C5, but like having a fake CAI scoop in the hood or a similarly fake brake duct scoops, I tend to stay away from such non-functional features. In fact, drilled holes in rotors can actually reduce braking performance due to their reduction of surface area (rotor diameter and other features being the same).
Some manufactures do currently (or very recently) ship street cars with slotted rotors; the Cadillac CTS-V and Dodge Viper ACR come to mind, so I believe the trend has started.
Thoughts?
In almost every case, the street version has drilled rotors while the racing version has slotted rotors. It seems obvious that the manufacturers include drilled rotors only because buyers "think" they are effective, sporty-looking or ?
I don't blame anyone who feels this way when it comes to choosing rotors for their C5, but like having a fake CAI scoop in the hood or a similarly fake brake duct scoops, I tend to stay away from such non-functional features. In fact, drilled holes in rotors can actually reduce braking performance due to their reduction of surface area (rotor diameter and other features being the same).
Some manufactures do currently (or very recently) ship street cars with slotted rotors; the Cadillac CTS-V and Dodge Viper ACR come to mind, so I believe the trend has started.
Thoughts?
