Hey Everyone,

My car had Girodisc rotors and OEM pads and worked fine and was quiet. I finally got my Endless ME20 pads, the performance is amazing, but it squeals like a freight train on the street the last 20 feet of braking. Swapped back to OEM pads, squeal is still there. I presume some pad transfer would be the issue, what the solution for this?

 

Try Michelin advanced wheel cleaner (or similar) on the calipers and wash off with a high pressure cleaner. Works for me.

 

I'm a Pagid Yellow RSL29 pad fan with my Girodisc rotors... I find that if I go to the race track, or some "Spirited Mountain Drives" I get little to no squeal on some daily driving in-between.
Keep in mind Endles ME20 and Pagid RSL29 are Track pads and perform best when "hot".
The only reason to have these pads is if your are glazing, chunking. and destroying OEM pads on the track.

good stuff!

 

It'll go away for like 6-8 brake applications, but will come right back.

 

I destroyed the Factory pads in one track day. Chunks falling off, severely over heated. Hence why I put the ME20 on them. If I get the brakes "track hot" the noise does go away, but any street driving its horrific. I dont mind some noise from aggressive brakes, not my first rodeo, but this is insane.

 

order some MX72 street pads and swap them out for non track day driving?

 

Doesn't that require removal of OEM calipers? In my 2017 C2S [991.2] it certainly does, and I find that inconvenient. If I was driving hard enough on track to be experiencing chunking or other rapid degradation of the OEM pads, I'd be strongly considering upgrading my brakes including calipers to a design that enabled swapping pads without having to remove the caliper. I think AP Racing has such a caliper design. I know that StopTech does; I have them on my 2011 Audi S4. Pad swaps can be done in a few minutes. More time spent lifting the car and removing the wheel than swapping the pads on my Audi.

 

So to answer my own question, it was pad transfer. I had to get the brakes up to track temps and make multiple full application stops from speed. I was able to remove the transfer and the squeel is 95% gone, completely livable

 

That's good to hear... I have MX72's now (completely quiet, but I glaze them at the track) and have ME20's on the way. Glad to hear they are still quiet.

 

I run Ferodo DS2500 while not a true "track" pad I find it to hold up well on the track even on very hot days and I have never had an issue with squealing on the street.

 

MX72 or the MX72+

 

MX72. I didn’t realize there was a + version until after my pads had been made to order. BUT I did read something on RL about how the + sacrifices pad wear and brake dust to get the 50deg higher temp rating.

 

Pappagray, it looks like you figured it out! When you heat brake pads up to a certain temp, they deposit a layer of material on the disc (pad transfer layer). Then the pads run on that layer of pad material. Since the two materials are the same, they operate fairly noise-free. Over time the pad transfer layer wears off if you're not doing any hard braking. When the brake pads rub against the differing material (the iron of the brake discs), they tend to squeal and make noise. Please check out the videos below. They explain how to swap pads, bedding in, etc. If you understand everything in these videos, you'll be equipped to eliminate most brake squeal at any point in the future.

 

You have effectively removed whatever previous pad coating was on your rotors and replaced that coating with whatever is the material of your current pads. I'm glad you got it worked out!