Brake pad deposits - DS2500

[ripp]

Hi,
After the last trackdays the pads lay an uniform deposit on the discs which also causes a light judder.
I have the 197 brembo conversion with ds2500 pads and 300mm scenic brembo discs (which are new). I like to think that I bed in the pads properly.
I only do 2 max 3 laps on a 4km track and then 1 or 2 cool down laps so I won't be saying I abuse the brakes
When I had 280mm brembo max discs I didn't have this issue, so what can it be?

 

[Touring_Rob]

I sometimes get deposits on my car which causes a wobble on track, I just drive through it and give the brakes death and it seems to completely fix the issue until the next track day.

 

[Advikaz]

Ds2500’s aren’t the best track pad. That said they’re fine.

Often see that issue when you’re not braking hard enough / on the brakes for too long

 

[Daniel]

Get the brakes warm, do a few 70-0 hard stops and they’ll clear up,
This is the reason I swapped out my 2500’s and fitted 1.11’s.

 

[charltjr]

What they said. Ds2500 likes relatively hard, short brake applications otherwise they do leave deposits. Easy enough to clean up, just give them death a few times.

 

[ripp]

Ds2500’s aren’t the best track pad. That said they’re fine.

Often see that issue when you’re not braking hard enough / on the brakes for too long

Yeah I know they're not a track pad but I don't have a track car either. I visit the track 2 max 3 times per year (unfortunately) and I don't abuse the brakes. I have some guys that do multiple laps on them without issues, I was thanking that maybe I did/do something wrong somewhere

 

[Advikaz]

Yeah I know they're not a track pad but I don't have a track car either. I visit the track 2 max 3 times per year (unfortunately) and I don't abuse the brakes. I have some guys that do multiple laps on them without issues, I was thanking that maybe I did/do something wrong somewhere

Hard and short on the brakes is better than holding on to them for longer

 

[RSRowe]

I've had this on Ferodo pads, 2500, 3000, and ds11.1
I've never had any trouble with Mintex compounds M1144, M1155, F2, and F4.

 

[frayz]

2500s are shite, they will continue to leave smeary shite on the discs. - Common issue mate, you've done nothing wrong.

 

[Touring_Rob]

 

[Brigsy]

2500s are shite, they will continue to leave smeary shite on the discs. - Common issue mate, you've done nothing wrong.

This. Chuck the ds2500 in the bin, they are shite.

Replace with Ds1.11. Leagues ahead.

 

[JamesBryan]

2500 ok for the rear, but in a small caliper with no cooling they get cooked.

 

[charltjr]

They definitely work better on some cars than others. Couldn’t fault them on my M3 with the six pot caliper upgrade.

 

[Brigsy]

2500 ok for the rear, but in a small caliper with no cooling they get cooked.

Agreed, rear ok.

 

[JamesBryan]

They definitely work better on some cars than others. Couldn’t fault them on my M3 with the six pot caliper upgrade.

Size definitely help dissipate the heat better.

Big 6 pot aluminium caliper is like a big heatsink.

 

[ripp]

2500 ok for the rear, but in a small caliper with no cooling they get cooked.

I have the Brembo calipers upgrade and they are miles better cooling wise than standard units