Let’s talk Slotted/drilled rotors

[Flyhalf]

So the Kenny Brown rotors seem to be much lighter which in my opinion is a big deal.
What’s the big difference between the 2?
Pricing is same

In the front?
Are you sure ?
I have theirs in the back cause girodisc wasnt making them yet.

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[ChitownStang]

In the front?
Are you sure ?
I have theirs in the back cause girodisc wasnt making them yet.

https://kennybrown.com/collections/...otors-2015-2021-mustang-gt-w-performance-pack

 

[Linkster1666]

Race car parts are expensive, who knew?

 

[Flyhalf]

https://kennybrown.com/collections/...otors-2015-2021-mustang-gt-w-performance-pack

7lbs lighter. Vs 11lbs lighter of girodisc
Girodisc is lighter.

 

[Dave2013M3]

I tracked a 911 with factory cross drilled rotors countless times and had no cracking. If they did you just replace them. BMW M Cars have cross drill d rotors as does Porsche. Guys with the PCCBs would switch those out for the drilled OEM rotors for track days. For a street car that maybe sees a few DEs a year not running on slicks this is a non issue if you are using a quality rotor. The BAER Eradispeed rotors are of excellent quality.

Not to mention the BAER rotors have replaceable outer rings.

This along with lighter wheels can free up almost 70-75lbs of rotational mass.

 

[WD Pro]

Very topical, but my bro picked me up today in his courtesy car (someone reversed into his M4)

S class Merc :

If you are wondering who to avoid, it’s an Enterprise rental …

WD

 

[Optimum Performance]

Very topical, but my bro picked me up today in his courtesy car (someone reversed into his M4)

S class Merc :

If you are wondering who to avoid, it’s an Enterprise rental …

WD

the marketing holes do a number on things.

 

[slowdown]

If you’re doing it for looks and not for lap times on a track get whatever you think looks cool.

 

[ChitownStang]

7lbs lighter. Vs 11lbs lighter of girodisc
Girodisc is lighter.

No, the Kenny Browns are 7lbs ea=14lbs savings and Girodisk is 9.2lbs lighter for both the way it reads on their websites

 

[Flyhalf]

No, the Kenny Browns are 7lbs ea=14lbs savings and Girodisk is 9.2lbs lighter for both the way it reads on their websites

I think there is a little confusion here
Here's my measurements.
Girodisc is 23.5lbs each.
Ap racing 24lbs each

Their website also says similar thing.

https://girodisc.com/ford-s550-mustang-gt-brembo-front-rotors/

 

[Optimum Performance]

No, the Kenny Browns are 7lbs ea=14lbs savings and Girodisk is 9.2lbs lighter for both the way it reads on their websites

Girodisc is 23-24 pounds each for the front. OE fronts are around 34 pounds each. Honestly not sure where the question is, Girodisc saves about 20 pounds off the front rotors combined. 20 is more than 14. I have a hard time honestly believing the difference is that much to the other 2 piece brand but I know they use production castings for the rotor rings. I just weighed a Girodisc, it is under 24 pounds.

 

[ChitownStang]

Girodisc is 23-24 pounds each for the front. OE fronts are around 34 pounds each. Honestly not sure where the question is, Girodisc saves about 20 pounds off the front rotors combined. 20 is more than 14. I have a hard time honestly believing the difference is that much to the other 2 piece brand but I know they use production castings for the rotor rings. I just weighed a Girodisc, it is under 24 pounds.

Ok, I was just going off the descriptions on the PP gt versions . But it makes sense they are all about the same

 

[ChitownStang]

Girodisc is 23-24 pounds each for the front. OE fronts are around 34 pounds each. Honestly not sure where the question is, Girodisc saves about 20 pounds off the front rotors combined. 20 is more than 14. I have a hard time honestly believing the difference is that much to the other 2 piece brand but I know they use production castings for the rotor rings. I just weighed a Girodisc, it is under 24 pounds.

Do these rotors wear out substantially faster than stock?

 

[Optimum Performance]

Do these rotors wear out substantially faster than stock?

They actually last longer because they run cooler than the OEM's, especially in the rear because the Girodiscs are cooled from the hub side rather than the wheel side.

 

[sabtaj1]

Well here is my Eradispeed front as of today and 6-7k miles w/Z26 pads. I don’t track. Just street n occasionally strip. I have no complaints (or cracks).

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