Hi everyone,

So I'm in the process of buying new rotors for my 2007 TL. Currently I have oem rotors but was interested in getting drilled, slotted or drilled and slotted rotors. I have heard mixed reviews on this and am not sure what to believe. Some people say they cool off your rotors and have a significance, others say it's just for looks. I heard that they crack between holes, like connect the dots after time, some I have seen say they have a 1 year warranty for cracking which gets me a little hesitant. My TL is not a track car, not heavily modified and it is my daily driver so I don't expect to be putting that much strain on braking and rotors like on a track. So if you can please leave some insight on this topic that would be really appreciated! Thanks everyone.

 

If you don't track than there's no need for any rotors that are drilled and/or slotted.

If you want it for looks you will be safer with slotted rotors.

Drilled/slotted rotors don't make a impact when it comes to braking power if you just drive the car normally.

Better braking performance comes from good tires and a big brake kit. Bigger rotors and more pistons help stop the car and dissipate heat better.

 

Don't go with cross-drilled rotors, purpose is to make the disk lighter and cool/heat faster which isn't what you want on a street car. Slotted Rotors eat through pads faster due to the slots, but help the bite of the pad and also make sure the pad is always clean. I love my racing brake slotted rotors and with the Acura A-Spec pads the stopping power is way better than factory.

 

I don't understand how it's considered for "looks"
It looks rusted and ugly while comprimising the integrity. Speed holes with a pick axe anyone?
If you want good stopping power look for popular branded parts with reviews.

 

This. No need for drilled or slotted for a street-driven TL.

 

I just bought a set of slotted and drilled for all four corners, I'm in the same boat in that it's a mostly daily driver, so it's probably a bit of overkill, but I figured with the factory brembo brakes, and considering how cheap they are online I might as well go big.

New tires and suspension are also getting done at the same time, so there isn't a good "before and after" comparison (everything is shot, the previous owner really ragged out the car).

I'll try and remember to update how well they work on the street!

 

^well, your new tires are going to be the main factor in stopping. traction is a function of stopping and new tires with fresh meat will stop your car quicker than with worn out tires...

so, no doubt, you will feel a better "after" with new tires!

 

Drilling and slotting are for heat dissipation. Unless you manage to overheat stock brakes all the time, there's no benefit to drilled/slotted. In fact, it might be detrimental due to decreased surface area.

 

I bought slotted for aesthetic reasons ONLY!
looks sexy! lol

 

^^ that's why i bought slotted too, love the look haha

 

I have some racing brake slotted rotors with some Hawk ceramic pads on my TL. Brakes work great and minimal dusting too. I have some slotted rotors on our Honda Pilot and they make a difference with temperature. We drove down Pikes Peak a couple summers ago and there is a stop where a ranger shoots your brakes with a temperature gauge- he couldn't believe how cool our brakes were at the time. Lots of cars need to stop for their brakes to cool down but we were off on our way instead. So the slots may make a difference even for people not tracking their cars.