Fast road front brake set up

No one ever listens to the opinions of others on this forum or gives their experience any credence so it's pointless.


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Sorry SC for the late reply. I have detailed the set up I am happy with for road and track on 17 / 12 in this thread. Only issue is that the PFC Z don't work well with te grooved discs... If you don't track then you'll be fine on oe pads. With RBF600 you should be fine. I don't need upgraded lines but others might differ.

 

Indeed. Unless of course if you're judging everyone else by your own standards ?

 

Thanks Nick


On the basis of keeping the standard lines I would’ve attempted changing the fluid myself but from reading one of the posts it looks like I need to take it somewhere where they can also flush the fluid though the ABS module – job for another day then.


Why is it that the PFC Z pads don’t work with the grooved discs whereas the standard pads do? I would’ve looked to upgrade the pads (as you would for the cost vs standard) therefore am I likely to get the same issue with other pads?


I’ve always been brought up on the concept of grooves/drilling etc. adds to the friction (at the expense of lifespan) between the pad and disc and being vain I quite like the grooved discs and in time was planning on a set of the G-Hooks (added bonus in that they’re ‘sided’).

 

Grooves/Drilling take surface and therefore friction away. They're there for cooling and water displacement purposes and very often mere looks.

 

I thought you said PFC Z would be ideal for my useage ie a couple of track days and the Ring on a previous post I've just bought new pads discs etc ?

 

Expensive for a fast road arent they? Think were 200 for z rated for a meg 2

 

£116 from Ktec

 

So without ktax I'm sure they can be got for less

Whats the part number mate?

 

20/BRP/250/001 Perf. Friction M3RS Frnt pads 11 'Z' (I think)

I could have got them cheaper from AS. Performance but if you take postage into account it was the same price

 

Cheers, Mk2 yeah?

 

Mk 3 rs250 cup

 

Ah. I need them for an R26

 

Oh, don't be upset, keep hanging in there. [emoji12]

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They're good on track if you have plain discs but they don't get on with the grooved discs. Odd I know.

 

Now what do I do ?

 

Do you mean PFC Z rated at the rear ? They only make them for the front calipers sadly... I really don't know why the z don't get on with grooved but the combo is definite no no based on unanimous feedback of trackers on Meganers.fr

 

Someone there put on a RAG compatibility chart on there - will try and find it.

 

So I've just bought new grooved discs, in your opinion what pads should I be using. Do I change the pads or the discs.

 

I thought the idea was that it gave extra edges on the disc for the pad to catch/grip against, almost like a cheese-grater. I can’t think of many sports/super/hyper cars that don’t have either grooves or drilling, or both. Likewise race cars. A lot of the time the brakes actually need to be kept hot for the pad material to work, as opposed being cooled down as most people assume.

 

Ok - Mintex M1144 or Performance friction Z rated pads? I like the sound of the M1144 (in fact they came on my car), but heard they would just out of stopping power on track. BUT they have good cold bite and low dust.

Would the PF Z rated be as good but with the ability to perform on track?

 

Just to throw a spanner in the works, I'm running ebc blue stuff at the mo (I know a lot of people don't rate ebc) but they seem pretty good to me.
Although I haven't had a chance to test these on track yet, good cold bite (seems better than standard). Much improved in every way over standard once a little bit of heat in them.
And allegedly one of their "race/ trackday pads".
They were a similar price to the pfc z rated pads

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-deleted-

 

I can see this is going to go on and on.

After an extensive conversation with Alyn of
http://asperformance.com/

Who is probably the the largest stockist of Performance Friction products in the uk, and he is very knowledgeable, he has put my mind at rest.
He asked me why do all the leading brand/performance cars all have grooved, drilled or dimpled discs?

The PFC pads are designed obviously to work on the above type of discs, I've been running PFC pads Z rated (road/ring) and 08's (track and rally) on my PFC discs for many years now on my other car, i've never had any issues.

I also use Motul RBF 600 brake fluid. (also available from ASP)

I'll just have to wait and see how I get on ?

Looking forward to my first trackday in a Megane..

 

Very odd, a lot of people also run various PFC pads on Porsches many of which have cross drilled disks as standard.

 

Edit

 

Not odd. It was the particular combo that simply didn't work, not the Z per se nor the discs per se but the 2 together. As I said, I will dig out the info from meganers.fr when I am back in the country. It was pretty conclusive.

 

So do we take it, from the above that you are not commenting on your own experiences?

 

How do they "not work" as such? I can't see how a few drill holes in a disc would drastically cause them to be that much worse than on a plain or grooved disc

 

The only way for me to have experienced them would have been to change the discs on a new car to the older style discs to make sure that the unanimous experience on a high number of road and track pedalers was right. The link is here http://www.meganers.fr/phpBB3/viewtopic.php?f=47&t=14640 but all in French, 1074 posts on optimum pad/combo for our cars since 2010. I am not too fussed either way as the plain discs/PFC Z works well but it would be good to get your experienced based feedback and I'll update the French thread.

 

So pf z rated can cope on track?

 

Strange isn't it ? We're taking about the old slotted discs here. I have no idea why the combo doesn't work. But when you get unanimous reports from a large community of Meg drivers then you can either take notice or not take notice.

 

They can on plain discs in my experience (and possibly on slotted ones as BIG E will experience).

They are not track pads but with smart heat management I have had no fade at all (on RBF600) and they lasted 30 Spa laps, 40 Bedford laps and 24 Ring laps. The still had 4mm and I changed them then although those 4 mmm would have given many road miles but thin pads can't shed track heat too well obviously.

 

Does anyone know what make the OEM Cup slotted discs are?

 

Thanks. Are they HC's or just 'normal' composition? If HC's then without increasing the size, or going to separate bell & rotor there probably isn't a better disc??

 

I’m sure I remember from my 172 days that on the Brembo site there were ‘normal’ discs and then HC discs…..

 

probably marketing..cant be to many foundry's around these days..and they certainly are not going to make slightly better grade steel just for brembos`budget` HC disks
Every disk available almost certainly comes from china..