[Twt]

I was looking at some two piece front rotor options to save weight and increase cooling.....I came across this RB rotor:

http://www.racingbrake.com/RB-Two-pi...bmw-irk-13.htm

Has anyone tried these or any other non OE choices?

[Franzino]

Good question...would also like to now all the different non OEM rotor options.

[pal]

Does GiroDisc make rotors for our cars? If not, I can work with them to see if they would do it - I don’t see why not. They worked with me a few years ago to do a prototype for the TT RS. Now many RS guys who track their cars run GiroDisc.

[look585]

Wish PFC made the Direct Drive rotors for this car. They were excellent in my last two M cars.

[horsepower_and_hounds]

Originally Posted by look585

Wish PFC made the Direct Drive rotors for this car. They were excellent in my last two M cars.

Why wouldn't they...they are the same F80/82/87....... that is a large spread of M cars

[look585]

Originally Posted by m2ruder

Why wouldn't they...they are the same F80/82/87....... that is a large spread of M cars

Didn't realize. Thanks.

[nd2002]

Originally Posted by pal

Does GiroDisc make rotors for our cars? If not, I can work with them to see if they would do it - I don't see why not. They worked with me a few years ago to do a prototype for the TT RS. Now many RS guys who track their cars run GiroDisc.

I did reach out to them, since I'm in Seattle. Apparently they didn't have any F80/87 rotors at that time (last year-ish). I also volunteered my car as a test mule if they needed, but haven't heard back from them since.

[look585]

Originally Posted by m2ruder

Why wouldn't they...they are the same F80/82/87....... that is a large spread of M cars

I checked and couldn't find em yet.

[pruettfan]

I sent a email to Giro Disc to see if they would consider producing an option for our cars. I will report back what they say. From what I hear they produce great products for a reasonable cost.

[Twt]

Originally Posted by pruettfan

I sent a email to Giro Disc to see if they would consider producing an option for our cars. I will report back what they say. From what I hear they produce great products for a reasonable cost.

[sebaflex]

Alcon makes em

https://f87.bimmerpost.com/forums/sh....php?t=1406473

[Twt]

Originally Posted by sebaflex

Alcon makes em

https://f87.bimmerpost.com/forums/sh....php?t=1406473

Those look like 2k for front only with no weight savings

[pal]

Originally Posted by pruettfan

I sent a email to Giro Disc to see if they would consider producing an option for our cars. I will report back what they say. From what I hear they produce great products for a reasonable cost.

I’m going to GiroDisc this Sunday morning to have them test fit their rotors. I’ll take pictures and report back to this group. I worked with them to build rotors for my TT RS a few years ago. Their rotors solved my overheating issue on track and allowed me to keep that car. The stock M2 rotors seem a lot better than Audi RS stock ones, so while the upgrade may not be as great for cooling, GiroDisc will be lighter.

[pruettfan]

Originally Posted by pal

I’m going to GiroDisc this Sunday morning to have them test fit their rotors. I’ll take pictures and report back to this group. I worked with them to build rotors for my TT RS a few years ago. Their rotors solved my overheating issue on track and allowed me to keep that car. The stock M2 rotors seem a lot better than Audi RS stock ones, so while the upgrade may not be as great for cooling, GiroDisc will be lighter.

Cool, I emailed them last week but never got a response. Hopefully you can talk them into making rotors for our cars. Given that they would work on several BMW models I would think it would make financial sense.

[Twt]

I just ordered the Stoptech rotors from Turner....should be bolt on with some weight reduction and improved cooling.

[pal]

I spent the morning at GiroDisc in Bellingham to have them test fit their initial prototype rotors. These are NOT production rotors; finish and anodization will be perfect on production ones. Looks like GiroDisc is lighter, had more vanes and higher volumetric capacity.

GiroDisc rotors have been phenomenal on my TT RS track car with close to 400awhp and a touch under 3300lbs. I am looking forward to these being production ready. They will be awesome on the M2 with the large rotors front and rear.











What's up with so much rust on the rear hub on a car with less than 500 miles and one that's been parked inside.


GiroDisc test fit on the front looks good.


Weighs less too



GiroDisc test fit on the rear and it looks good


Weighs less too

[nd2002]

Originally Posted by pal

I spent the morning at GiroDisc in Bellingham to have them test fit their initial prototype rotors. These are NOT production rotors; finish and anodization will be perfect on production ones. Looks like GiroDisc is lighter, had more vanes and higher volumetric capacity.

GiroDisc rotors have been phenomenal on my TT RS track car with close to 400awhp and a touch under 3300lbs. I am looking forward to these being production ready. They will be awesome on the M2 with the large rotors front and rear.











What's up with so much rust on the rear hub on a car with less than 500 miles and one that's been parked inside.


GiroDisc test fit on the front looks good.


Weighs less too



GiroDisc test fit on the rear and it looks good


Weighs less too

Thanks for the update! Any hints they give you on timeline?

[pruettfan]

Very cool, I will be going with the GiroDisc when they are available. Since these will also fit many other BMW's M3/4 and anything with the Brembo's I suspect they will sell a lot of them.

[pal]

Originally Posted by pruettfan

Very cool, I will be going with the GiroDisc when they are available. Since these will also fit many other BMW's M3/4 and anything with the Brembo's I suspect they will sell a lot of them.

That's my guess. They make great rotors for track use so I hope they do

[Franzino]

Originally Posted by pruettfan

Very cool, I will be going with the GiroDisc when they are available. Since these will also fit many other BMW's M3/4 and anything with the Brembo's I suspect they will sell a lot of them.

Yes...please!

[Twt]

I just received the Stoptech front two piece rotors from Turner. They look good and weigh 23/10 vs 25 for OE. I will install them this week and test them at Sebring in May. The fact that they claim 60% more air flow , are lighter and only slightly more expensive than OE appears to be a descent upgrade.

[pruettfan]

Originally Posted by pal

That's my guess. They make great rotors for track use so I hope they do

Thanks for taking this on and being thoughtful enough to share the information. This what makes for a great community.