Drilled and slotted rotors

[Jstang23]

My apologies, I totally misread your initial response! Cheers!

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[JetGray_Mach1]

I am not going to get into the performance aspect of it. But I will share my positive experience with these slotted rotors below when I upgraded my GT to Brembos on my S197. They looked awesome and were quiet and never warped. (This was a daily though).

 

[Jstang23]

I am not going to get into the performance aspect of it. But I will share my positive experience with these slotted rotors below when I upgraded my GT to Brembos on my S197. They looked awesome and were quiet and never warped. (This was a daily though).

Slotted rotors are fine! Very different from drilled. You’ll find they eat your pads faster than blanks but not to the point where its bad.

 

[JetGray_Mach1]

Ignore that POS temporary spacer LOL

 

[5.0Vonn]

I am not going to get into the performance aspect of it. But I will share my positive experience with these slotted rotors below when I upgraded my GT to Brembos on my S197. They looked awesome and were quiet and never warped. (This was a daily though).

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thanks for the recommendation, I guess I should’ve waited and posted a thread before buying the drilled ones. But at least now I know for the future. They look sick on the car too.

 

[Jstang23]

Don’t worry too much about it! Especially if you don’ track it. Just watch the holes and look for cracks in the future. Should be fine for a good long while on daily driving!

 

[TonyNJ]

@5.0Vonn not sure about your cooling/braking question, but this I know:

Recently had 2 sets of rotors turned/cut. A 2016 350R front drilled set, and 2020 GT500 front solid set. Even though the 500s are bigger, the 350Rs were more expensive to have redone. A lot more. More than double.

Also, Ford got away from the drilled rotors on the later year 350s. Something about cost/benefit. YMMV.

 

[luc]

@5.0Vonn not sure about your cooling/braking question, but this I know:

Recently had 2 sets of rotors turned/cut. A 2016 350R front drilled set, and 2020 GT500 front solid set. Even though the 500s are bigger, the 350Rs were more expensive to have redone. A lot more. More than double.

Also, Ford got away from the drilled rotors on the later year 350s. Something about cost/benefit. YMMV.

Shops usually don’t want to work on drilled because their tool can easily break

 

[shogun32]

I've been doing it for 34 years...!

so has Boeing been building the 737 family.

 

[shogun32]

Shops usually don’t want to work on drilled because their tool can easily break

and chips cutting edges. Typically also means much longer operation since the speed of rotation and cutter advance rate has to be lowered.
I'm nervous as a long-tailed cat in a room full of rocking chairs when doing interrupted cuts on my lathe. Small advance, small cuts.

 

[Weyland-Yutani]

I just changed my rotors to Drilled and slotted rotors, I’m curious to see if there’s much of a difference in cooling/braking power. Any thoughts?

I think they look great and that you shouldn't concern yourself with what other people think. If they don't work for you, I'm confident that you'll figure out what works best on your own.

I've run track-days/Auto-x with blanks, drilled, drilled and slotted, and slotted. For me: the biggest difference is "slotted" regardless or whether they're drilled or not. I'm an engineer, but I'm also not Michael Schumacher, nor am I a race brake engineer so....

 

[shogun32]

I'm an engineer, but I'm also not Michael Schumacher, nor am I a race brake engineer so...

this is the Internet. Name/credential dropping is how we roll. SME is decidely optional

 

[ShadesOfBloo]

so has Boeing been building the 737 family.

 

[ShadesOfBloo]

Yeah, I do.
Drilled rotors from factory on viper, ferrari and both porsches. Boxster Spyder is sitting outside.
What would the engineers at the OEMs know about drilled rotors?

The engineers would know when they've been outvoted by the marketing department, and shushed by the bean counters.

...Much like how Zora Arkus-Duntov never got to see the mid-engine Corvette he wanted.
And Pontiac tested Firebirds with independent rear suspension, but never got to sell it.
And my Mustang rides like the handling team and marketing's Bluehair Division got in a fight and nobody won.

Expensive, sporty cars come with cheese-grater brakes when the right people decide it's fashionable.

 

[dpAtlanta]

Expensive, sporty cars come with cheese-grater brakes when the right people decide its fashionable.

One has to wonder why the Ford engineers (yeah, those guys again) decided to make non-drilled rotors obsolete in 2018, and the 2019-2022 Shelbys had factory OEM smooth rotors for both the GT350 & the GT500.

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