Brake Pad Temps

One for Nigel really.....

What operating temp do pads for a coop need to be for road / track use? The pads I have in at the moment are designed for 250 degrees - which I think might be overkill!

Not to step on the brake masters toes here but i'm sure the leading edge of the pad can reach very high temps. My Pagid greys were white and i'm sure Nigel has asked about this already and been told 600 degrees?

Not 100% Si but i'm sure it's well over 250.

250 is woefully inadequate for hard track use

When I fitted Pagid Yellows, I offered to hammer them on the track and report back to Pagid.

Its actually the trailing edge of the pad that gets the hottest - after a single trackday (about 100 miles) the pad material was crumbling away - I later found that this was caused by the melting of the resin material that bonds the friction compound together. On the Pagid Yellows, I was informed that I must have exceeded 750 degrees for this to happen. I certainly would have had glowing discs for the brief moments when this temperature was achieved.

With pads that are rated at 250 degrees, you will find yourself off the island within a lap - time for a review of the latest Pagid GB thread I think Si?

Ah nice to know the old memory hasn't gone altogether. I'll be interested to see how my bigger front set-up and pagid yellows fare on Saturday.

Are those Fiat 500 pads Si??

They are the Hawk pads that comp brake supplied with the track brakes.

250+ is the operating temperature - I find it hard to get them hot enough on the road for them to bite properly.

Try some Pagid or Ferodo 2500, they bite well from cold. Compbrake were never known for supplying high quality items.

EBC Yellowstuffs have a maximum operating temp of 1000 degrees, so 250 is pretty pitiful.

Ferodo DS2500 is a very good option for fastroad and light track use. your brake wear will increase dramatically as ur laptimes drop. if ur a beginner, fastroad pads like DS2500 shd be ok. but as u get more experienced and push the limit, u shd invest in a good set of race pads to really bring down the laptimes.

i just finished a trackday at the sepang F1 track. had a brand new set of mintex redbox pads and destroyed them within 20 laps. strangely, they didnt fade or glaze - kudos to mintex - but they just wore down nearly to the backing plate.

a 156 friend of mine commented that his DS2500 were better than his previous Tarox 112 (Strada) pads. he could brake later with the DS2500.

ive tried a whole bunch of race pads on my previous 156 (read: heavy european FWD) - mintex 1144 & F4R, ferodo DS3000 - and the best was the F4R. i actually managed 4-5 trackdays with it. i destroyed the DS3000 (non-+ or E) within one trackday, my discs along with it. the F4R were quite kind to discs. but none of these pads work well from cold.

if u have brake heat problems and cant solve it using hotter pads (price, practicality) think about upgrading to larger diameter discs. larger discs dissipate heat better and reduce hotspots on the disc/pads.

redd

I dont want to know the maximum operating temperature - I want to know the minimum! As in one stop on the road from 90 ish - are the pads going to get up to 250 degrees (the temp where they work) in a second or two?

..and don't do like i do, use them when they're only 5mm thickness left! I went off the track.
Most of the heat resistance was by then gone, I think by 5mm 70% gone.

I had Carbotech Pantherplus which were fantastic when fresh though. This year it'll be Carbotech XP8.

suba, even with the very aggressive DS3000 pads, it took about 3-4 normal stops to get them up to temp. so if u just drive out of ur house, turn the corner, and suddenly need to make an emergency stop, ur sh1t outta luck. otherwise, once they warm up they're ok.

also, be careful when reversing out of ur carpark the first time. it can feel like there are no brakes. and when ur driving in rain or long distance cruising where the brakes have had a chance to cool down.

redd

so do you know what the operating temperature of those pads is....i.e. in those 3 or 4 stops before they start biting how hot do they get?