New Drilled & Slotted Rotors

[MisterMac]

Don't go drilled, there's no benefit to doing so on a street-driven car. Slotted and/or dimpled is plenty.

There's plenty of benefit to drilled rotors on a street driven car.

Heat dissipation, especially in the mountains.

I love the way they look, which is enough in itself.

Further, I regularly take her blazing down the open highways at speeds I won't quote.

Lastly, the price was right to have what I want, so I did and it makes me very happy.

Being happy is beneficial to everyone, especially the Camaro SS I was racing last night on the highway. I was able to stop on a dime when I needed to.

To each their own. Enjoy!

 

[Manaz]

You get negligible airflow through the holes to have an impact on heat dissipation, and you're actually reducing thermal mass (meaning there's less rotor material to absorb heat to start with - meaning heat becomes a problem faster). Outgassing from your pads may be a little better (as gas can't get trapped between the pad and rotor surface) - but slotted rotors can achieve this too, as well as better sweeping the pad surface and without the negatives of drilled rotors.

Holes in the rotors actually become a weak point in them over time (you may start to see surface "spiderweb" cracking occurring - it's generally only cosmetic, but it can and does occur, particularly over time with multiple heat cycles. It's really a very minor thing except in very rare circumstances - noting I didn't say there's anything WRONG with drilled rotors - just that there's no benefit to them.

"But F1 cars and other race cars have drilled rotors" I hear people say. Sure - but they replace their rotors every race.

Do they look better? Sometimes - and that's subjective, and if in your case you feel that they look better, then yes, get them.

I found the "Wave" option here to be interesting: 4000 SERIES - they're not drilled, but rather dimpled [EDIT: That's incorrect - they're actually both!] - they give the appearance of drilled, without some of the potential issues. Plus they have a funky shape!

I'll happily correct my earlier statement - "there's no performance benefit to doing so on a street-driven car".

 

[Manaz]

Oh, just saw the claims that the manufacturer is making. They're... "interesting". Not strictly right, but not so far removed from reality that marketing people need to feel dirty (or dirtier than normal).

You cannot remove material via drilling through the rotor without structurally weakening the brake rotor - from a purely engineering perspective, removing material has the effect of reducing structural integrity, pure and simple. There are ways to minimise this - changing the shape of the holes, the pattern that the holes appear in, distance between holes and other structures (edges included) chamfering the edges of the holes, etc.

What I can accept is "without significantly structurally weakening the brake rotor" - but that's not as good from a marketing perspective.

 

[Manaz]

Here's a link that goes through where I'm coming from:

Rotors: Blank vs Cross Drilled vs Slotted and Warping | Automotive Thinker - Discussing the finer points of automobiles

 

[Metalmania82]

Agreed with the non-need or actual benefit of drilled, even slotted as well. Everything you mentioned above as well as increased pad wear.

 

[MisterMac]

Agreed with the non-need or actual benefit of drilled, even slotted as well. Everything you mentioned above as well as increased pad wear.

Pads are cheap, lives are priceless.

I didn't much care about the types of rotors I had until my SRT Charger. That thing stopped on a dime and came with drilled and slotted from the factory with the brembos.

When I did my SRT diving experience, they came in real handy.

My stinger has more power and less weight. I'll stick with what I like. They cost me nothing extra over dimpled.

Now, feel free to go rain on someone else's parade if you like. Never a shortage of opinions a car forum for sure.

 

[Metalmania82]

Who's raining? Just providing information to others thinking of going the same route.
Isn't information and opinions what forums are for?

 

[MisterMac]

Who's raining? Just providing information to others thinking of going the same route.
Isn't information and opinions what forums are for?

My poor attempt at keyboard humor. It's all good!

 

[Manaz]

I have meant no offence in anything I've said, and taken none from any response to my posts.

I share what I know, and hope to learn what I do not.

 

[Metalmania82]

No humor intended

 

[Angel]

I'm sceptical and looking forward to what you think she some more miles. I don't believe a pair of rotors should be $2k, but $130 for a pair seems too good to be true.

There made in China that is why there cheap.

The look like they are good quality thou, just because there made in china does not mean they wont be reliable and work just as good as oem.

 

[Metalmania82]

They're all made in China

 

[MisterMac]

 

[Angel]

View attachment 23091

These rotors are legit.

I used to work for a Brake manufacturer in the product development side for 5 years.

This is a great buy, although it only cost the company $45 bucks to make the pair and they sell it for $150.

I personally would go the Slotted only route, but you cant go wrong with the Drill/Slotted combo.

Thank you finding these rotors. I will be purchasing a pair soon.

 

[Shrikecorp]

If it helps...

Brake Performance is rated "Excellent" with 9.3 / 10 on Trustpilot

 

[Angel]

If it helps...

Brake Performance is rated "Excellent" with 9.3 / 10 on Trustpilot

Trust me I know about them.

The prior company I worked for Brake Parts Inc. was a big competitor. I use to be an Engineer for the product development side for rotors. I am into the Aerospace industry now. I really do miss my old job at Brake Parts Inc, but I don't miss the pay.

Brake Performance is a great company!

 

[MisterMac]

These rotors are legit.

I used to work for a Brake manufacturer in the product development side for 5 years.

This is a great buy, although it only cost the company $45 bucks to make the pair and they sell it for $150.

I personally would go the Slotted only route, but you cant go wrong with the Drill/Slotted combo.

Thank you finding these rotors. I will be purchasing a pair soon.

Thanks for adding additional value to the community by sharing your direct experience!

 

[Metalmania82]

Machined and finished in USA is different than manufactured in USA. Almost 100% of aftermarket drums and rotors come out of China now. All brands, sub-brands. Same factories.

 

[MisterMac]

Machined and finished in USA is different than manufactured in USA. Almost 100% of aftermarket drums and rotors come out of China now. All brands, sub-brands. Same factories.

Roflol! It's a piece of metal. As long as it meets or exceeds specs, I couldn't care less where it was made.

 

[Angel]

Machined and finished in USA is different than manufactured in USA. Almost 100% of aftermarket drums and rotors come out of China now. All brands, sub-brands. Same factories.

You are 100% correct.

I guess I can say this now since I no longer work for Brake Parts.

What Brake manufacturers do is manufacture most/if not all in China or buy it from a manufacturer from China. They then add some steps in USA such as packing, machining etc..... To market it made in USA.

There has always been this impression that Chinese made stuff is Shit. That's is not the case, at least with brake parts sold from legit companies.

The manufacturing facility that Brake part has in China is top of the line. All the latest robot's and equipment. All the engineering design, testing, packaging, and machining for high performance rotors was done in the USA. In the box we didn't put made in China, we put engineered in the USA. Its all a marketing strategy, but I can argue that the quality is no different than made in the USA. It just all about cost savings. We even sold rotors and pads to Brembo that they repackaged into their own.

I would not loose sleep over made in China vs USA. For the average driver, these slotted/drilled rotors will provide improved braking over the OEM set up.

I will be all over these rotors. Now if you are all about racing then you buy 2 piece rotors and Hawk high performance pads. That's for a different market. I am not sure how many people will actually race a Stinger hardcore.