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When are pads well and truly....
Posted: Mon Jun 05, 2006 3:41 pm
by The_Rossatron
I had a look at my brake pads the other day and they seem to have lost a fair bit of meat (rears look worst strangely), but how many mils is it til it's metal on metal time?
I just want them to last until after fridays track day, but don't want them to bugger up after 2 laps....
Posted: Mon Jun 05, 2006 4:04 pm
by Gareth
Order new ones.
You don't want to be 30 mins into track time for them to fail
Posted: Mon Jun 05, 2006 4:05 pm
by jj
I killed mine last time at KH down to metal on metal and I thought they would have been fine. I am picking up new rears today just in case they go too. Dont want to have to rely on the handbrake again!
Re: When are pads well and truly....
Posted: Mon Jun 05, 2006 4:07 pm
by Shug
The_Rossatron wrote:I had a look at my brake pads the other day and they seem to have lost a fair bit of meat (rears look worst strangely), but how many mils is it til it's metal on metal time?
I just want them to last until after fridays track day, but don't want them to bugger up after 2 laps....
Vague posting 101...
How many mil is left? How long has it taken you to wear this far? It's a factor of how hot you get them....
OTOH, are you asking how many mil on a new pad? From memory, my last Greenstuffs had maybe 10mil on them... That's just from memory though.
FWIW, I agree with G here - just get some new ones. Never worth skimping with a track session looming.
Posted: Mon Jun 05, 2006 4:15 pm
by The_Rossatron
Sorry for the vague post

Thing is they were on the car when I got it 2nd hand. So I'm not sure when they were new. I've done 10000 miles on them, including one track day (east fortune) but a lot of the cars use is just getting me around at a not too stunning pace.
Get ready for ultravagueness...
When I look at them the fronts seem to have at least 6-7 mils on them until the bigger pad bit thing on the outside.
Other thing is, my disks are nearly so if i fork out £100 for mintex pads then need new disks won't I need new pads again?
Posted: Mon Jun 05, 2006 4:19 pm
by ed
i killed my standard pads in 7000 miles and had to cut a track day short cause they died
ive been told that you should always change pads when you do the disks so might be worth doing them all at the same time.
/2c
Posted: Mon Jun 05, 2006 4:20 pm
by Shug
The_Rossatron wrote:
Other thing is, my disks are nearly so if i fork out £100 for mintex pads then need new disks won't I need new pads again?
Nah, not really. Take some time bedding them gently - let the pads form to the shape of the disc over a few days. They'll flatten out reasonably quickly. Other thing you can do is just sand the face of the pad (making sure it's perfectly flat) when you fit the new discs - that means the material transfer will be uniform from the start.
6-7mm should be okay though... Unless you really horse pads or they break up. I'd always have a spare set at a TD (for safety's sake) anyway.
Posted: Mon Jun 05, 2006 4:22 pm
by Shug
ed wrote:i killed my standard pads in 7000 miles and had to cut a track day short cause they died
ive been told that you should always change pads when you do the disks so might be worth doing them all at the same time.
/2c
Whoever told you was selling parts, yeah?

7k miles is okay for standard pads - concensus is that they're sh*t. Ali nailed a set in inside 3k miles IIRC
The reason people say that, is that you want to have the pad material transferring to the disc uniformly from the start (if you're using them hard) If there's plenty of meat on the pads, there's no problem in using them (sanding them flat, if you must)
Posted: Mon Jun 05, 2006 4:42 pm
by mckeann
about 1 mile before they get to this state:

Posted: Mon Jun 05, 2006 4:47 pm
by The_Rossatron
mckeann wrote:about 1 mile before they get to this state:

I think it will be a long time before I have my peds being held up by some bloke with a cheezy grin

Posted: Mon Jun 05, 2006 9:01 pm
by robin
For steel disks ...
Front pads are 9.0mm from new (measuring from the surface to the bit wank-R is holding in his hand). Book recommends replacing at 2.5mm - you'll find the last few mm vanish quickly on track.
Rear pads are 6.5mm from new (as above), with same 2.5mm replacement point.
Typically front inside pads wear faster than outside and you cannot really see them without removing wheel.
Suggest you check all 8 pads - less than 50% on any pad is not going to be enough for 4 hours of dry warm weather esp. not in an S2 Exige on R tyres, unless you let me drive (I don't use the brakes much as I don't drive very quickly).
If they are the originals throw them away and be thankful for the music that they've been singing, you've had your money's worth (mine went after one day at Oulton and one day at the ring - Ali's similarly).
Don't worry about the disk thing - in fact changing disks on brand new pads can be a bit of a pain with pagids as they are a bit thicker than standard IIRC, so starting with part worn is a bonus.
If you're stuck for pads I have new set of RS14's here (though you would want to change all round rather than mix compounds). I probably have various spare sets around the 50% level (because I change them before ring trips and so on), but TBH it's a waste of time to fit anything but brand new ones.
Cheers,
Robin
Posted: Mon Jun 05, 2006 9:24 pm
by Sanjøy
Thread hijack, my MMC disks have done ~65k am I a

?
Posted: Mon Jun 05, 2006 9:32 pm
by Stephen
Sanjoy the mmc disks "should" last forever it's only the pads that wear.
Have you ever replaced the pads?
Posted: Tue Jun 06, 2006 9:31 am
by The_Rossatron
Hey Robin, I could be interested in those pads, how much would you like for them?
Do you think Eliseparts would struggle to deliver by Friday?
Do pagids squeek like people say they do as my car is mainly for the road this may do my head in.... hence mintex was my plan...
Sorry for all the questionis!
Posted: Tue Jun 06, 2006 9:36 am
by Tom
Reading this brake chat, I'm gonna get the wheels off tonight and have a look (provided locking nuts havent seized

). Will Eliseparts deliver by fri? Anyone local carry anything? Other firms?