Quick answer: For almost every driver, a slotted disc is the best choice. It sheds heat and gas, keeps braking consistent, and does not have the cracking problem that drilled discs do. We do not recommend drilled discs, because the holes are prone to cracking. Dimpled and slotted looks great but is chosen for the look, not for a big performance gain.
Now here is the full explanation, from a manufacturer that actually makes these discs.
How each design works
We make our discs in a few different styles across the VMAX rotor range, and it helps to know what each one is doing. If you are still getting your head around the basics, start with what brake rotors are and how they work.
Plain. A straight OEM style replacement disc. No slots or holes.
S type (straight slot). Our entry level slotted disc. It gives a real performance benefit over a plain disc, just not as much as the R or J type.
R type (curved slot). Our most popular disc. More slotting across the face means better braking efficiency than the S type.
J type (J hook). Built for track focused drivers. It gives the best balance between surface area and slotting, which is what you need when you are running a much more aggressive pad than normal.
Dimpled and slotted. Chosen for looks. It is a good looking disc, but the reason to buy it is the aesthetics, not a performance jump.
Drilled. Holes drilled through the disc face. We do not recommend these, and the comparison below explains why.
Slotted vs dimpled vs drilled at a glance
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Design
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Heat and gas handling
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Cracking risk
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Pad wear
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Best for
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Look
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Plain
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Standard
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Low
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Standard
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Daily driving
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Standard
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Slotted (S / R / J type)
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Very good
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Low
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Slightly higher, barely noticeable
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Street, towing, track
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Sporty
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Dimpled and slotted
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Good
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Low
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Slightly higher
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Drivers who want the look
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Best looking
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Drilled
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Good when new
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High, especially at half life
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Higher
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Not recommended
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Aggressive
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Which is best for street driving?
Slotted discs are worth it for street driving. You get better braking efficiency and a better looking disc, and at VMAX the upgrade only costs a fraction over a standard set of brakes. If you are driving a normal car normally, an S or R type slotted disc is a smart, low cost upgrade.
Which is best for towing and 4WD?
Slotted discs are best for towing. We also suggest running a high temperature brake pad and high temperature brake fluid so you are covered on every front. Towing loads your brakes the same way hard driving does, so the setup should match. This is also the setup that prevents brake fade on long climbs and descents.
Which is best for track and performance?
Slotted discs are best for track driving and racing, and to be specific, our J type slotted disc is the best choice. Drilled discs can be dangerous here because they are prone to cracking. When you are generating serious heat lap after lap, the last thing you want is a disc with stress points built into it.
The truth about drilled discs and cracking
This is the part most retailers skip. Drilled discs tend to become a problem at around half life. As the disc wears, the taper on the drilled holes starts to turn into a 90 degree edge, and that sharp edge is exactly where cracks begin to form. It is not a manufacturing fault, it is the design. That is why we steer customers toward slotted every time.
Do slotted rotors wear pads faster?
Technically yes, slotted discs wear pads a little more. In the real world the difference is so small that you will not notice it. You are getting cleaner, more consistent braking in exchange, which is well worth it.
Frequently asked questions
Are slotted rotors worth it for street driving?
Yes. Slotted discs are worth it for street driving. At VMAX we can give you that upgrade for a fraction over the price of a standard set of brakes, so you get better braking without spending big.
Do drilled rotors crack?
They can. Drilled discs often become problematic at around half life, because the taper on the drilled holes turns into a 90 degree angle as the disc wears, and that is where cracks start.
Do slotted rotors wear pads faster?
Slightly, but the difference is so small you will not notice it in normal use.
Slotted or dimpled for towing?
We suggest slotted over dimpled for any application.
Do I need slotted rotors with ceramic pads?
No, you do not need ceramic pads with slotted discs. In fact we have better pad compounds than ceramic, especially if you are chasing higher performance. Ranges like EBC and our own 600 degree pads are worth a look.
Find the right rotor for your vehicle
Whether you want a simple street upgrade or a full track setup, we can match the right disc and pad to your car. Every VMAX disc comes with our 18 month or 30,000 km warranty and fast delivery Australia wide. Search your car in our brake rotor range to see slotted options that fit, or read our picks in the best brake rotors and pads guide. Not sure if yours need doing yet? Check the signs your rotors need replacing.