Best combined track and street pad?

[chadwicke619]

not really agree or disagree kinda thing... I'm talking about a specific experience I had. the sanding was to make sure to get any residue of the wilwood compound it picked up out of it. Didn't try it on the new rotors before sanding, maybe it woulda been fine. But since he got new rotors to kill the noise he didn't wanna risk it, so sanded the pad down a mm.

and the end of the day, pad transfer theory/opinions/whatever don't matter, what matters is noise or no noise. And there was noise till we got rid of rotors that have had 2 different pad compounds used on them. He even tried standing down the pads on the same used rotors. Noise didn't go away till he got new rotors.

And I’m just trying to add a data point, even though it sounds like you’re pretty decided. I’m just telling you… I use two different compounds, and it’s not noisy until it cleans off the first compound, which happens pretty quickly. At that point, it’s metal to metal with no transfer layer of any compound, so it makes sense that it’s noisy.

I do agree that you should try and keep the same compound, but in this context, I don’t know that it matters. A cold track pad doesn’t give two shits what compound was on there before - that’s my experience, but I’m absolutely open to hearing more experienced insights here.

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[warmmilk]

And I’m just trying to add a data point, even though it sounds like you’re pretty decided. I’m just telling you… I use two different compounds, and it’s not noisy until it cleans off the first compound, which happens pretty quickly. At that point, it’s metal to metal with no transfer layer of any compound, so it makes sense that it’s noisy.

I do agree that you should try and keep the same compound, but in this context, I don’t know that it matters. A cold track pad doesn’t give two shits what compound was on there before - that’s my experience, but I’m absolutely open to hearing more experienced insights here.

using your logic, the squealing noise should be gone after driving it just a few minutes with cold rotors. Yet there was still squealing noise months later... its not that I'm decided or stubborn or don't agree with how you describe things the transfer layer does or does not stay on. Its are the brakes making noise or not. and until the we got virgin rotors and sanded down the pads, the squealing noise persisted. In my mind that means there was still a mix of pad compound even after months of street driving. You can come to any conclusion you want.

Also, I'm not saying this will happen with any 2 compounds. there are compound out there that are more compatible than the 2 I used here, not sure if you can get to zero noise mixing 2 compounds, but definitely less than the PTSD inducing noise I had in my specific experience. although going from a track pad to a street pad, the street pad 9/10 times will be zero or next to zero noise. But going back to the track pad will usually make it a little louder, particularly while on the street. But anytime you mix to track compounds, you're likely gonna end up with extra noise till you get new rotors.

I recommend going the track pad for the track and street pad for the street direction. That way you can have quiet brakes for daily driving and not go through 50%+ of your pad in one track day. Plus you'll have pads that work better at the track when on track. And a little brake noise on the drive to/from the track isn't a big deal in my book. Pad swaps are pretty quick. I'd recommend investing in a caliper piston compressor. Girodisc sells a nice one. Amazon has a bunch if you wanna save a few bucks, I'd recommend finding one similar to the Girodisc design.