How did this level of wear pass a service inspection?
Discussion
A little back story here:
Soon after I got the vehicle a year and a half ago, I took it for a comprehensive service at a very well known and reputed independant marque specialist close to me. They said the brakes were all absolutely fine on their inspection report.
Fast forward to today, 5-6000 miles later, and I had a wheel off for a puncture repair. Whilst I was at it, I looked at the brakes to check the pad thickness, and saw a good 8mm on there so plenty of meat in them, obviously changed not long before I bought the truck.
Then I looked at the disc
That lip is a good 2mm or so at the very least, the disc looks very very comprehensively worn! Now, I personally would have replaced it with the last set of pads, so how the hell it passed the service inspection i've no idea as thats a lot more than 5k miles wear! So my question is, would I have a case against the garage if I went back armed with paperwork showing how little mileage I've done since?
Soon after I got the vehicle a year and a half ago, I took it for a comprehensive service at a very well known and reputed independant marque specialist close to me. They said the brakes were all absolutely fine on their inspection report.
Fast forward to today, 5-6000 miles later, and I had a wheel off for a puncture repair. Whilst I was at it, I looked at the brakes to check the pad thickness, and saw a good 8mm on there so plenty of meat in them, obviously changed not long before I bought the truck.
Then I looked at the disc
That lip is a good 2mm or so at the very least, the disc looks very very comprehensively worn! Now, I personally would have replaced it with the last set of pads, so how the hell it passed the service inspection i've no idea as thats a lot more than 5k miles wear! So my question is, would I have a case against the garage if I went back armed with paperwork showing how little mileage I've done since?
A set of decent (Ie. EBC) discs is £100 per pair.
It's not the money aspect that annoys me, its the fact that there is no way I've worn a 2mm lip in a set of discs in 5000 miles, and had I not had the wheels off then I could conceivably have done another 20k or so before the next major service (based on the "they're fine" service report. Given they must be absolutely marginal for replacement thickness as it is, I dont like to think what would happen if one wore through to the vented bit just when I needed it for an emergency stop.
It's not the money aspect that annoys me, its the fact that there is no way I've worn a 2mm lip in a set of discs in 5000 miles, and had I not had the wheels off then I could conceivably have done another 20k or so before the next major service (based on the "they're fine" service report. Given they must be absolutely marginal for replacement thickness as it is, I dont like to think what would happen if one wore through to the vented bit just when I needed it for an emergency stop.
ChemicalChaos said:
A set of decent (Ie. EBC) discs is £100 per pair.
It's not the money aspect that annoys me, its the fact that there is no way I've worn a 2mm lip in a set of discs in 5000 miles, and had I not had the wheels off then I could conceivably have done another 20k or so before the next major service (based on the "they're fine" service report. Given they must be absolutely marginal for replacement thickness as it is, I dont like to think what would happen if one wore through to the vented bit just when I needed it for an emergency stop.
So you would do 20K without checking your discs? What are you hoping to achieve by opening a "case"? It's not the money aspect that annoys me, its the fact that there is no way I've worn a 2mm lip in a set of discs in 5000 miles, and had I not had the wheels off then I could conceivably have done another 20k or so before the next major service (based on the "they're fine" service report. Given they must be absolutely marginal for replacement thickness as it is, I dont like to think what would happen if one wore through to the vented bit just when I needed it for an emergency stop.
So someone's made a mistake. Alright, it's not cool, but they're not THAT bad. I don't know what the wear rates are for this sort of thing, so I don't know how thin they'd be at the time of inspection, but it's not as though the disks are missing and that hasn't been spotted (although you'd probably have noticed pretty quick).
The garage won't do anything, no matter how much of a fuss you make. The best you can hope for is that, if you mention it discreetly and informally to a supervisor level employee at the relevant garage, that the bloke who inspected the car gets a genteel reminder to be doubly sure next time he checks some brakes. I do understand your concern, and you're right that it could, potentially, have been more serious, but if we spent our time worrying about the things which could potentially be dangerous, we'd very quickly go insane.
Simon.
The garage won't do anything, no matter how much of a fuss you make. The best you can hope for is that, if you mention it discreetly and informally to a supervisor level employee at the relevant garage, that the bloke who inspected the car gets a genteel reminder to be doubly sure next time he checks some brakes. I do understand your concern, and you're right that it could, potentially, have been more serious, but if we spent our time worrying about the things which could potentially be dangerous, we'd very quickly go insane.
Simon.
Discs will have a minimum thickness, usually marked on the disc or in the service spec. Ask the garage for the records of the disc measurement when it was serviced.
50/50 chance they won`t have measured it. Bad practice if they didn`t. If they did and recorded it as being within wear limits then they had no need to replace with new, as long as the surfaces are ok. The lip on the edge doesn't touch the pads so is not normally a problem.
Horses for courses, for every one who would replace lipped discs there`s someone else who cries rip off if you do. Damned if you do, damned if you don`t.
50/50 chance they won`t have measured it. Bad practice if they didn`t. If they did and recorded it as being within wear limits then they had no need to replace with new, as long as the surfaces are ok. The lip on the edge doesn't touch the pads so is not normally a problem.
Horses for courses, for every one who would replace lipped discs there`s someone else who cries rip off if you do. Damned if you do, damned if you don`t.
ds by charging for new discs or they are failing to do their job by anticipating disc wear to the mile.AdeTuono said:
You're going to complain about them for not charging for something they didn't do that didn't need doing?
You're an idiot.
No, if you'd read it properly, wasnt expecting them to have changed them. I was expecting them to have politely notified me though that they are very obviously near to needing a change, and clearly not fine until the next major serviceYou're an idiot.
anonymous said:
[redacted]
Unless I replaced the brake pads with metalworking files, there's no way that has all happened so quickly. I'd just like to inform them and point out their error so that they take a little more care next timeHammer67 and FerrariF50Lover - thankyou, 2 very sensible and balanced posts. I will probably simply mention it discreetly and ask them to take more care next time, Is I've indicated above in reply to hora. According to RAVE (the service manual), a disc for this vehicle starts at 24-25mm and needs replacing at 22mm absolute minimum. I've seen a 20mm disc with less of a wear difference lip than mine, so I do highly suspect that a micrometer didnt go anywhere near it during the service.
So the pads were changed just before you got it and the discs were ok when it was serviced just after that? I wonder if some after market pads were fitted that are of a different compound to oem and which wear the disc more quickly?
Also I don't believe garages measure disc thickness as a matter of course in a service, in fact the wheels don't even come off half the time if the pads thickness can be seen through the wheel..
Lastly it is highly unlikely that the disc would wear through under heavy braking-they would have become so noisy before that point that you would have had it checked before that point.
Also I don't believe garages measure disc thickness as a matter of course in a service, in fact the wheels don't even come off half the time if the pads thickness can be seen through the wheel..
Lastly it is highly unlikely that the disc would wear through under heavy braking-they would have become so noisy before that point that you would have had it checked before that point.
limpsfield said:
I was going this say you need a hobby.
Then I looked at your profile and realised who you are. Why do you keep changing your name? If you didn't start stupid threads, maybe you wouldn't have to. Just a suggestion.
It all makes sense now. If I'd realised, I would neither have bothered replying, or probably even read the thread. Then I looked at your profile and realised who you are. Why do you keep changing your name? If you didn't start stupid threads, maybe you wouldn't have to. Just a suggestion.
What "case" would you have?
They did not advise you (when the discs where in somewhat better condition) that they may have needed replacing, but which they did not think they did.
So you did not replace them.
Well, spend the money and replace them now.
If anything, you got a further 5k miles out of them so the garage's opinion benefited you.
They did not advise you (when the discs where in somewhat better condition) that they may have needed replacing, but which they did not think they did.
So you did not replace them.
Well, spend the money and replace them now.
If anything, you got a further 5k miles out of them so the garage's opinion benefited you.
Edited by 996TT02 on Monday 10th March 08:29
I realise that's a Discovery setup.
It's a near 2 ton vehicle.
It also seems to have been used in mud.
You could easily get through a set of discs in 8k if you drove it frequently under those conditions.
Mountain bike discs last practically for ever in a dry climate. Where I spend a lot of my time practically no-one ever replaces these, except if seriously dinged, generally the bike goes first. Same here, but I have been through a set in just 6 days of muddy downhill riding in France.
Some cars, especially with original pads, get through discs rapidly anyway. I had a Golf diesel that seemed to need discs every other set of pads.
So could very well have been responsible for much of that wear yourself, in any case.
It's a near 2 ton vehicle.
It also seems to have been used in mud.
You could easily get through a set of discs in 8k if you drove it frequently under those conditions.
Mountain bike discs last practically for ever in a dry climate. Where I spend a lot of my time practically no-one ever replaces these, except if seriously dinged, generally the bike goes first. Same here, but I have been through a set in just 6 days of muddy downhill riding in France.
Some cars, especially with original pads, get through discs rapidly anyway. I had a Golf diesel that seemed to need discs every other set of pads.
So could very well have been responsible for much of that wear yourself, in any case.
Edited by 996TT02 on Monday 10th March 08:45
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