Car has only done 3400 miles and 5 or 6 months old. Just wondering if its something I should get looked at sooner than later

Edited 19 April, 201313 yr by sly200sx

Mine are the same - 8 months old.

I'm guessing contaminated pads or dirt / grit stuck in the surface of the pad.

Paul

Nothing to worry about until it's time to change the pads, and even then unless they're a lot worse they'll be OK. Will just take a bit longer for new pads to bed in. I might be more fussy about the fronts, but not the rears.

My front and back discs are fine and the car has now covered 3000 miles since I bought it brand new in November 2012.

Cheers for replies. Am not bothered its a little unsightly really. Unusual on both sides. Might need to be driven more spiritedly :-)

Different model, and probably different discs, but my Scout's rear discs became scored quite quickly, and although I don't have a picture to hand I think they look worse than yours do. Admittedly mine is a bit older, July 2011 and 37k miles, but this developed quite quickly. The car has just been serviced for a second time, and dealer mentioned it but didn't seem overly concerned. I may have to replace discs when the pads are due, but if so will be a bit miffed to be replacing discs so soon.

I wonder if Octavia rears are particularly prone to this, as the fronts are fine, or are other cars like this too? I can't recall previous cars suffering like this.

Try using your brakes a bit harder.

Looks like the normal rust build up has become embedded in the pads and has scored the disks.

Seeing as the rears hardly do any braking unless you are driving spiritedly they are not being kept clean. Try a few handbrake applications when moving to clean them up a bit.

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Try using your brakes a bit harder.

Looks like the normal rust build up has become embedded in the pads and has scored the disks.

Seeing as the rears hardly do any braking unless you are driving spiritedly they are not being kept clean. Try a few handbrake applications when moving to clean them up a bit.

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The rear brakes provide around 40% of the braking. Driving style doesn't come in to it.

IMHO it is a fair bit less than 40%, as soon as weight starts transferring to the front the bias is dynamically adjusted to prevent the rears locking up.

Statically it may be 40%, but I find that when I use my brakes it is to stop me when moving.

The other thing that tends to destroy discs is acidic alloy wheel cleaner not being rinsed off and it eats in to the discs.

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Which contradicts what you said in the first place.

Obviously the split varies by vehicle but the rule of thumb is a 60/40 split. Heavy braking from high speed me see the bias move forward, which is the opposite to what you first suggested.

It is not true to say that the rear brakes hardly do any braking. You's soon notice if they weren't working.

But you have forgotten about the initial grab before the weight transfer........

Those discs look like the pads are contaminated with rust and that has caused the scoring.

The usual cause of this is gentle braking on shorter journeys etc and the rust deposits that form overnight, after rain etc not getting cleared from the discs.

I have only had one car that has suffered like this in 25 years, and it was rust forming on the disc that caused it. If I made sure I did a few harder stops when safe to do so it kept the disc and pads cleaner and prevented the scoring.

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My rear disc's & pads are originals & on 43k now & still like new,however i will need to change my front disc's & pads this years as they are corroded on the inner face on both disc's.

Different model, and probably different discs, but my Scout's rear discs became scored quite quickly, and although I don't have a picture to hand I think they look worse than yours do. Admittedly mine is a bit older, July 2011 and 37k miles, but this developed quite quickly. The car has just been serviced for a second time, and dealer mentioned it but didn't seem overly concerned. I may have to replace discs when the pads are due, but if so will be a bit miffed to be replacing discs so soon.

I wonder if Octavia rears are particularly prone to this, as the fronts are fine, or are other cars like this too? I can't recall previous cars suffering like this.

My Scout is my first car (apart from a Clio 172 Cup where the rear brakes do very little) to exhibit this. 3 different dealers looked at it whilst within warranty and each rejected it as a warranty claim. Thankfully it passed its recent first MOT (the Clio seems to fail on rear brake effect every few years), but I'm resigned to changing the discs and pads early. Someone suggested something like Black Diamond (from memory) discs which have a coating and so should only rust where the pad is biting.

Apply the handbrake when coming to a stop every so often keeps the rear discs rust and score free.

See my posts on this very subject. My Dealer garage replaced my rears and pads at 25000 miles because they got to a terrible state but I'd been complaining about them since before 10,000 miles when they started to look like yours. If you let them go you will probably fail the first MOT on them at 3yrs so start mentioning it to your service manager a.s.a.p. is my humble advice.

Thats odd. Mine are very smooth. I wonder if it is because of low mileage? I do quite a lot of miles.