zracer196

Girodisc...Anyone try / trying these? I know a few guys who use these on their GT3RS cars and like them. Wondering if there is an alternative to the PFC rotors...

https://competitionmotorsport.com/a1...-gt4-clubsport

thuggo

I feel like these are more expensive than the PFC offering.

LZRD GRN

Ran them on my GT3RS, have them on my GT3, and have them ordered for my GT4.....

Seem superb (with Pagid RS 29), but only HPDE, and not a Clubsport!

zracer196

maybe so but if the PFCs are done in three weekends maybe trying these would be worth it if they last twice as long. Right now my pads are far out lasting my rotors. LOL.

thuggo

Thats amazing....what tracks are you going too. 3 weekends is crazy.

s996

I have same problem. I just went through first set of front Pfc rotors in 7 de track days. I realize they are consumables but this is crazy. The pads were still like new. Rear has also near new pads with moderate crack only about 1/2 inch long.
Barber, Indy, Daytona and one day at road Atlanta
Rings are 450 each and very easy to change.
I change to endurance pads about twice as thick to try to keep heat down and lead to less cracking. According to Pfc team info.
If anyone can confirm a more reliable option I’m game.

38D

You've got to have something wrong. Maybe pistons are dragging? Missing cooling scoops? We've done ~25 hours of race time on a set of rotors and they still have plenty of life left.

blomman

Same for me, 20h, 1/3 left, some minor cracks in the rotors in the front.

s996

I’ll have to get some pics but the cracks went clear across the surface of the rotor from middle to outside edge.

i’ll have to check the ducts to make sure they’re open but I can’t imagine that be plugged up it’s a new car.

zracer196

VIR / Daytona / Sebring (8 days on them total - About 1000 miles)...I am sure they are not thin / worn that way...But there are cracks (that according to what I am reading) making them ready for replacement.

zracer196

Yes same for me...All in place, etc. I can tell you I am using the brakes pretty hard...With ABS it's pretty easy to! LOL!

Places like Daytona probably don't help.

38D

post some pictures of the cracks. If they are not thru the casting, the are just surface and don’t matter much.

s996



s996

Sorry guys I didn’t know how to post the pic. This is the night before two days at Daytona when I called Pfc and ordered new front rings.

The cracks didn’t get much wider but by Sunday morning they reached the outer edge and I didn’t feel comfortable going to Sebring with them.

Maybe it’s ok to go inside to outside as long as they are not all the way through the thickness, but it never was before on any other track cars. Teach me.

38D

Hard to tell from that pic to be honest. It _looks_ like it’s just one the surface but hard to tell. How deep do the cracks appear to you?