Warren-RB

The rotor incident on CTS-V was a mis-retrofit of new (V2) disc to old (V10 hat. Nothing wrong with RB rotors.

Facts:

Version 1 (04-07) - Rotor was 355x32mm, caliper is 4 pot.
Version 2 (2009+, no production in 2008) - Rotor is 370x34mm, caliper is 6 pot.

Customers buying the complete rotor assembly for V1 and V2 never had any issue.

When V2 was released in 2009 it's a fairly popular upgrade for V1 owners.

This V1 customer had RB two piece, he seemed to be satisfied with its performance, so when he upgraded to V2 brake (6 pot caliper w/370x34 rotors), instead of buying a new rotor assembly, he re-used his old V1 hat and only purchased the replacement ring (370x34) which is supposed only for fitting V2 hat with correct offset.

Brake failure for his rotor assembly was destined to occur.

We have a thread (below) to further explain what the offset difference can mean and discourage a consumer from retrofitting his own brake with his own assumption.

http://forums.racingbrake.com/showthread.php?t=1482

RB two piece rotors were considered to the toughest in Camaro, Corvette and CTS-V community (except this retrofit incident which can be scary unless members read the story behind).

Knowing GTR was the fastest and heaviest track cars on earth, we took the challenge and put our brake to GTR track racers hand since 2011, and after 5 years no one single claim was reported.

We have since taken a more cautious measure, no RB rotor rings can be purchased unless previous RB rotor ownership is verified, except Brembo/Stoptech BBK replacement rings, but even so we could also run into issue for those customers who do not assemble our rotor rings to original Brembo/Stoptech hats, however most customers understand and work with us to resolve their issues but there is always an exception such as this one.

BierGut

So how many pro race teams, any series, any level, use the AP rotors vs the RB rotors?

Who does the majority of the best drivers in the fastest cars in the toughest environment choose?

apex26

Factory driver Jan Magnussen youtubes of C6R clearly show the AP racing setup with J hook discs (10 seconds in):

Warren-RB

I simply replied to JR's comment about his comment on the design feature of AP rotors vs RB rotors, although I wasn't sure if that's what AP really wants to engage into discussion.

https://www.corvetteforum.com/forums...post1590975855

It was anticipated that someone (especially from JR who initiated this comparison) can further question or extend the discussion on design feature after our 1st response (w/two more to post), so we stay on objective discussion in "DESIGN differences" and learn from it, than as if anyone was questioning how popular AP rotors were in professional racing teams, because it was not what the thread title was suggesting.

I although believe Corvette community is for weekend warriors, who spent their own money for the best value of their brakes, than those racing team drivers.

We can only speak for what our brakes are made for (aftermarket stock replacement) with the following facts:

• RB offers the first aftermarket light weight two piece rotors for Z06 since 2006 (including other American muscle cars like Camaro, Mustang, Viper etc.)
• RB two piece replacement rotors (including Z51) has the longest running history on Corvette community than any other competition.
• RB makes more two piece replacement rotors (from Acura to VW) than all the competition combined.
• RB and AP (represented by Stillen) co-exists in Nissan GTR community, as two top serious track racers' choice on brake rotors.

The HACK

JDIllon

Do not run RB!! for track use. It is just a name and will not hold up on the track.

Innovate

Interesting thread, RB has F & R 2-piece rotors for my C6Z's stock calipers which I like. What other RB issues are there that people do not like? I want more than they are junk lol.

AP discontinued C6 calipers, owell.

dfettero

Check out KNS and their sale on DBA4000 rotors and XP650 pads.

https://www.knsbrakes.com/c/home

JRitt@essex

I'm not sure what you mean by AP discontinued C6 calipers. We have a whole range of complete brake kits for the C6 featuring AP Racing calipers:

https://www.essexparts.com/my-vehicl.../Grand%20Sport

Let us know what we you're doing with your car, and we'll do our best to guide you towards the product that is the best fit for your needs.

Innovate

Awesome! I was talking about the kit that was discontinued. The Radi-cal 372mm kit would be perfect but outside of my price range. I would like to stay stock rotor size or bigger. I will probably hold out for a while as I really like the Radi-cal kit.

JRitt@essex

Ah, got it! Sorry about that. I can assure you that the Radi-CAL kit will be worth the wait. The 372mm front kit is bad@ss, and once you have them you'll never want for brakes again!

Innovate

It is all good, do you guys have j-hook 2-piece rotors for stock calipers on all four corners? I already have new rotors and I have not seen any aftermarket 2-piece rotors for the front and rear, they are all fronts.

C5Z06CE

Sorry but in general this is a correct statement. However, AP Racing is NOT a sponsor of any team. ALL teams running AP Racing kits BUY them. When was the last time you saw an AP Racing sponsor logo on a race car. You don't,... that's because they don't sponsor. This is a fact I recently read on the AP Racing website.

Having said that I have run Both RB and AP rotors on track at Sebring. The RB were on a BMW and a smaller yet heavier rotor than the AP ones I run on my C5Z. The RB groove heavily and would squeal and not brake as well despite using nearly identical pads from PFC. The J hooks just work. In this case I decided to splurge. The RB were okay but not in the same class as the AP for sure.

My 0.02