DanielB

I've decided to upgrade the front brakes to the SBG Wilwood track day kit. I've already upgraded the rear rotors to URGE vented. All four corners have ducting and I've been running Hawk DTC60 pads. Except for the wear in front and microcracks, I've mostly been happy with the setup, but at tracks with more aggressive braking, the setup would begin begin to fade a little towards the end of the session. Hence I decided to upgrade to the SBG BBK so I won't have to think about brakes anymore (at least during the session) and also hope to save some expense over time from reduced consumables.

Now that I'm running with rotors that are more costly to replace, I'm thinking I want to try a more rotor-friendly pad. I'm also tired of having to clean the caked-on Hawk dust when it gets wet. These will be used only on the track and the drive there and back. I know Carbotechs are well liked here, but I plan to swap to street pads when not at the track so have ruled them out due to the difficulty in bedding them. They are on the pricey side too. The Raybestos pads seem to strike a good balance of rotor-friendliness, performance and price. But their compound numbering scheme leaves something to be desired. From what I've read here and on a few Corvette sites, the ST41, ST43 and ST47 are all good candidates for aggressive HPDE and still maintaining rotor life. However, it's hard to tell which of the three to pick. These two docs provide some additional info, but don't really clarify which is the best for my application.

Please share any experience you have with Raybestos pads at the track and which compound would be the best fit for me.

anorexicpoodle

I have run the ST43 for years. Both on stock calipers and on stoptech and I love them. Ive also run ST42 on my lemons car to tune in bias and those were fantastic

Ive contemplated moving to a ST47 rear to give me some more rear bite with my wing, but i wouldn't go more aggressive than the ST43 in front without hoosier level tires or global-time-attack style front aero.

They have a lot of bite and are pretty easy on rotors, and have good longevity.

Afterfire

I have the SBG Wilwood BBK and run GLoc GS-1's on the street and swap to GLoc R12/R10 for track. I drive on the track pads several hours to the track with no issues and have been known to drive around town with them when Im feeling particularly lazy and I have no issues other than making every red light sound like a bus stop. I know that doesnt answer your original question but I just thought Id throw that out there since you said you had issues bedding between compounds.

DanielB

Thanks for the feedback. I decided to try the ST43. It's the only compound for which Raybestos specifically mentions HPDEs as an application. I was tempted to try the ST47 which appears to be their latest and greatest, but it's described more as a pure race pad and so I expect it's going to wear pads and/or rotors faster.

I'm going to start with the Hawk HPS 5.0 for the street. Nobody has talked about any issues with bedding when changing between the two so I hope there won't be any surprises.

dan_uk

I like the 43's they wear a lot better than carbotechs but they don't have the same sort of feel and modulation they are a bit more aggressive

toplessPolak

DanielB

R 701.20 ST43
https://www.lpiracing.com/Raybestos-...761p267380.htm

sloppyjoe256

I've been running ST47 on my car for a while now, I have the urge ap racing front bbk + racingbrakes rear bbk.
The racingbrakes rotor likes hard brake compounds so it's been working well for me. I had project mu 999 before and it got chewed through really fast compared to the ST47

They do squeal a ton though which is to be expected for a pure race pad.

imstimpy

I run ST42/43 on my StopTech/Flow setup. They have really good temperature tolerance, best I've used across DS2500, XP8, XP10, XR2, XR3, R10, and R16. They have have the highest initial bite and lowest modulation. I eventually got used to them but swapped them out as soon as my R16s came in. Anything Carbotech has way better modulation.