NEILB1

iTrader: (9)

Just notice that the rear disc are not wearing evenly on both sides, It is wearing in the centre of the dics about 30mm and the rear is rusting, Not i know they should be likr the fronts all nice and shiney, so what could be causing this ?

C8 DHC 04WRX

iTrader: (13)

Probably just need stipping down and regreasing or maybe a sticking piston - what calipers do you have?

prodriverules

iTrader: (52)

They shouldnt look as the fronts mate as they are only doing about 35%of the braking so only really see hard pad contact under heavy braking but as mentioned i would think you've got a seized piston,i seem to remember you saying on another thread that your car gets parked up alot through the week?
If so then that would explain the problem mate.

NEILB1

iTrader: (9)

standard subaru ones fella

Yes thats right pal, i have been using it this week as i am working local, think i will have to strip the rears this week as it looks a dam mess really..

i was looking at other cars today with rear discs and they looked nice and shiny with no uneven wear, so looks like a piston on both side lol

prodriverules

iTrader: (52)

Regulary used cars will have even pad/disc wear and the same looking disc's front to back but ones that are used on wkends or less almost always have manky looking rears disc's.
ps mine has lol as it doesn't get used much

NEILB1

iTrader: (9)

i will get some pics up later to see if yours is the same ok

Chris 9-5

iTrader: (3)

Having just stripped and replaced my rear brakes, the pads were jammed in the caliper at the top and bottom, no way they could bite evenly

When I installed the new ones I made sure the fit was snug and NOT tight as before, plus of course added plenty of copper slip!

They are much quieter now too

prodriverules

iTrader: (52)

no problem Neil get them up and it will be easier to see what is going on mate

NEILB1

iTrader: (9)

thanks for the pointer on that i will have a look friday and get it all sorted out

NEILB1

iTrader: (9)

here you go fella hope it is just stuck pads

NSR


OSR

JohnD

iTrader: (5)

My 03 STi was the same and it wasn't a stuck piston. Have you looked at the back of the disc? Also, the fronts on mine were ok on the outer surface of the disc but the inner face was corroded for 50% of the surface! The main reason was lack of use which allowed a gradual build-up of rust which finally wore away the pad into a step in the surface.
Got a feeling it's new brakes all round for you!

JohnD

NEILB1

iTrader: (9)

thanks for that the fronts are fine and new from the pre owner, possibe new disc and pads for the read, better start pricing them up

Chris 9-5

iTrader: (3)

Bob'5 sorted me out with a set of rear discs and uprated pads at a fantastic price!

NEILB1

iTrader: (9)

how much ?

Chris 9-5

iTrader: (3)

I had other brake parts too which he put together on a special order.

Send him a PM and I'm sure you'll be impressed!

Link: https://www.scoobynet.com/private.php?do=newpm&u=21234

Jimbob

iTrader: (13)

Neil had the same on mine, new set of pads and disks from Godspeed and away to go, no issues.
They are on group buy and are superb.
https://www.scoobynet.com/group-buys...group-buy.html

Get a nice set of fronts and rears, all grooved to match

prodriverules

iTrader: (52)

That is defo just lack of use Neil and ive seen it on countless occasions mate in my garage,im afraid the only option is new discs and pads there mate,also id take the slides apart and give them a good clean and regrease as there probably getting dry and sticking slightly again from lack of use.
Check what the piston on the calipers go's back in like to and if needs be work it in and out a few times after picking up the dust cover and spraying some wd in there

stockcar

looks more like sticky/partly seized calipers or pads jammed in the sliders........

even with occassional use your discs should never look like that unless there is a problem of some sort

alyn

Chris 9-5

iTrader: (3)

Agreed!

This was mine and the pads were totally stuck top and bottom, had to hammer them out of the caliper:

JohnD

iTrader: (5)

My discs eventually looked a bit like that and there was no problem - all pistons were fine and regular fluid changes. The pads had steps in them where the rust ring wore them away!
I actually posted pictures of them on here, some time ago.
I bought the replacement pads (DS2500) from you!

JohnD

JohnD

iTrader: (5)

Just found the thread I started about the rust on my STi discs:

https://www.scoobynet.com/wheels-tyr...-not-good.html

JohnD

NEILB1

iTrader: (9)

Well had a look today and the pads were rock solid i could not move them at all, plenty WD40 and i managed to get them out eventually, the piston work fine so no prooblems there at all
So took everything to bits and cleaned it all up with copper slip added and they are good as new now, will give the discs time to bed back in and see how they look, if they are screwed like prodriver said new disc and pads for her

prodriverules

iTrader: (52)

Alright Neil id defo be looking at some new pads and discs in the near future mate,the lip on the disc is a indicator that the disc is wearing down so id run till the pads have worn down low[if not already]and change the lot out mate.
Also although the pad was stuck in the jaw it has clearly been moving abit under the hydraulic power of the brakes as the hole disc would be rusty[like ones above] with no contact with the pad,you'd find that it would have moved forward if the disc wasnt in the way but not back out.

NEILB1

iTrader: (9)

thanks for that, the pads look near new fella just not fitted right ie copper slip etc or cleaned up etc, the discs have started to clear a little but like you have said new disc and pads in the near fucture,
Thanks for the help and advice as well