[Newguy123]

Just get RB replacement rotors. Racing brake) they are 2 piece and lightweight, offer 2 different sizes for the front as an OE replacement..338mm and 350(oversized option that requires 18" wheels.) they are also the only company I'm aware of that offer the 2piece replacement rotors in the rear too. Oh and all made here in the USA

[lightspeedbriefs]

It's pretty laughable to cite the country of origin as a problem with very little conversation to performance or quality. I've seen good products come from China, and bad products come from the US. Mind you, iPhones are made in China - I don't see anyone complaining about their quality control. Anyone who refuses to own products where any part of them were made in China would wind up living in a tree fort and taking their horse to work.

[Blueeyesredpanda]

For that price might just get EBC......
https://www.ecstuning.com/b-ebc-part...s-pair/gd1390/

[Musashi]

Originally Posted by fibonacci2

It's pretty laughable to cite the country of origin as a problem with very little conversation to performance or quality. I've seen good products come from China, and bad products come from the US. Mind you, iPhones are made in China - I don't see anyone complaining about their quality control. Anyone who refuses to own products where any part of them were made in China would wind up living in a tree fort and taking their horse to work.

iPhones are assembled in China. Put together. Its majority of parts are made elsewhere, Germany being the bulk producer of iPhone guts, micro-circuitry, screens elsewhere as well etc. Not so good an example. But for sure batteries are made in China and yes, the factories cheated on insulation, burning Samsung a multi-billion$ hole. As a rule of thumb, performance components made in China do not exist, from aerospace to, yes Macs. Processors? never China. SSDs? neither. GPU's ? not. technology transfer regulations prohibit it. However, some new technologies (e.g. CCBs) with new patents in China exceed the Brembo tech, but this is a rare case confirming the rule.

[lwgrenier]

Originally Posted by Asonchadwick

Also the ti nuts were supposedly 16 grams and the aluminum ones 24 grams but i swear the ti felt just as heavy i need to buy a scale today and weight them.

You do know that titanium is almost twice as dense as aluminum right?

[Musashi]

Originally Posted by Newguy123

Just get RB replacement rotors. Racing brake) they are 2 piece and lightweight, offer 2 different sizes for the front as an OE replacement..338mm and 350(oversized option that requires 18" wheels.) they are also the only company I'm aware of that offer the 2piece replacement rotors in the rear too. Oh and all made here in the USA

Custom CCBs making their way to North America. Initially they seem expensive, but known M Perf owners loose 370mm to two winters or as low as 50,000 kms (I extracted 100,000 kms with repeated bed0ins but rust is finally eating it through the vents!)

CCBs custom description:

https://f30.bimmerpost.com/forums/sh...3#post23176483

[Aus335iguy]

Originally Posted by lwgrenier

You do know that titanium is almost twice as dense as aluminum right?

If he says they weighed the same doesnt that imply something else ?

[matreyia]

So far I have had these for about 4 years and they been excellent, far exceeding the bmw stock rotors. I will NEVER go back to stock or any other rotor unless it is lighter and from a respected producer. If brembo has lighter rotors and are competitive priced...I would try them, otherwise, i will stick with ECS light weight two piece rotors for the rest of the car's life.

[geko29]

I've been running the ECS drilled/slotted rotors in the rear for 2.5 years now. Work great, still look great, no rust. I'll be putting a set on the front next month.