Brake discs R1 Concepts or OEM Volkswagen

GTI Clubsport rotors drop 2.2lbs per side at the front

FWIW, I recently replaced my front rotors and pads at 40k and I have about 8mm on the back. At this rate, I'll probably have to replace the backs around the same time I do the fronts again. My rotors look nothing like yours though. Mine are smooth and no grooves.

I had the impression that those discs wouldn’t warp as easy as one piece discs but it looks as I was wrong. VW tried to machine my warped discs with them mounted on the car at one point but they failed so badly that they did not even want to show me the result. After that they messured the runout on new discs on the bench and found them OK. After the discs were mounted on the hubs they were messured again and that one of them had warped. That was the way they found the bad hub. I was quite surprised when I was told that VW did not have any tolerances for the runout on the hubs or the discs. I took for granted that they had quite strict tolerances both on the hubs and the discs. I don’t know if the eight piston caliper and the setup with opposed pistons makes the whole system more sensitive to warpage or not but that has been suggested. And to get this a bit more connected to the thread subject I can add that I have not found any alternative to VW original 365 mm floating discs at all. I was quite surprised to find them cheaper than the one piece 334 mm discs to my Passat W8 though.

Could be the hubs. Mine had an axial throw of 0,02-0,03 mm which I thought wouldn’t affect the discs. I filed a complainment to VW regarding warped discs and they blamed the calipers. Told me one of eight pistons was a bit sluggish. With new calipers and two sets of discs later they found what I had meassured before the complainment, a warped hub. The last pair have not warped after the typical 5000 km mark as before. So at least the floating 365 mm discs are very sensitive regarding straight hubs.

Picked these up because my ultimate goal was to do something OEM+. These were drilled with a very OEM like coating and when the calipers were painted blue it looked identical to those R32/R36 brake set up. Although I only had them for a short period of time, I've previously used e-Line on other cars and had no problems just like the Premium one.

Just the bigger carrier with the bigger rotors on the front. Didn't bother with bigger for the rears. I bought Red Stuff pads.

That being said, it would be great to see a basic writeup with pics of the fronts and rears being changed. I ordered and received some new slotted/drilled rotors with ceramic pads. When ordering, I just used the GTI as the model, since it uses the same brake rotors as the TDI, 312mm F, 272mm R - IIRC. If I have time, I will get some pics and write a rudimentary writeup on it. Not sure if I have time/patience to tackle this myself so I may just have my Audi/VW guy do the work (he has many more tools and 2 lifts). In any case, I will try to get some info and pics in here.

I am happy with the R32 setup so far ( rotors are freaking heavy); but if I was to upgrade it would be either AP or stoptech trophies....

Unfortunately the problem is inherent in the design of the rotors. Not in where they were produced. You can put the best rotors in the world on that car and they will still warp. Vw/Chrysler would need to spec a larger and thicker rotor to help dissipate heat properly. All aftermarkets will make the rotor to fit, based on the crappy oem specs. So, get used to having new rotors put on...because recall or not, Chrysler still needs to redesign that rotor. FYI, I'm in the same boat as you guys! These rotors suck!

The cause is Sub-Standard, Cheap "Made in China" Rotors.