This Could Have Been Serious !!
Discussion
blimey doesn't seem right to me 
The Moosehunter said:
Now I may be no expert but should this happen after only 10 miles of gentle bedding in, in the wet ?????
It would be quite unusual to see that sort of damage from thermal stress if the discs had been overheated repeatedly. For a brand new disc to suffer that much damage so quickly is exceptional. I guess it's conceivable that the discs got good and hot while you were bedding the pads in and them suffered from sudden quenching? But if you were only bedding them in gently in cold conditions, I wouldn't have expected them to get hot enough for this to be possible. There's plenty of surface corrosion, did that happen afterwards?
Actually, looking at the heavy surface corrosion on the unswept part of the disc I'm having trouble believing that these were brand new discs that had only covered ten miles. Not that I'm disbelieving you, but can you account for all that corrosion?
>> Edited by GreenV8S on Tuesday 10th January 00:14
Picture very deceptive photo. Must be my atmospheric lighting in the kitchen.
Try this
After some recent research, and some good reviews I purchased these disc new. They are have a black coating which is what you see around the hub and in the grooves. Marks on bell just from road crap on the rims from the Boxing day Tunnel Run. It got filthy on the way home.
Discs were unpackaged by me and were definately new. I went for grooved as have heard about failures of cross drilled. Hmmmmm. I think this must rate up there also.
I fitted new wilwood calipers and pads. Caliper mounted centralised to the disc when all tightened and pads certainly looked to be running true with the disc as best as the naked eye could tell. Could turn the wheel by hand with only some light surface friction. Started the gradual bedding in process by going around local road which is 4 roundabouts seperated by a mile between each to allow them to cool off. Approached each roundabout with caution due to new set up and the fact that is was raining, so any load would have been minimal
Returned home removed wheel to check for leaks etc. Feeeeecccckkkk !!!!
Discs were very warm but you could pick them up with bare hands (just). So no excessive heat in my mind. No where near the abuse they would have been getting later on.
Luckily this became apparant during local pottering about. Plan on doing more track days with the car this year and dread to think what would have happened at the end of the park straight at Snetterton if they let go there. Shudder
Upgraded replacement dics sent out by supplier today, as there is no way this brand will be gracing any car of mine in the future
Andy
>> Edited by The Moosehunter on Tuesday 10th January 00:53
>> Edited by The Moosehunter on Tuesday 10th January 01:01
Try this
After some recent research, and some good reviews I purchased these disc new. They are have a black coating which is what you see around the hub and in the grooves. Marks on bell just from road crap on the rims from the Boxing day Tunnel Run. It got filthy on the way home.
Discs were unpackaged by me and were definately new. I went for grooved as have heard about failures of cross drilled. Hmmmmm. I think this must rate up there also.
I fitted new wilwood calipers and pads. Caliper mounted centralised to the disc when all tightened and pads certainly looked to be running true with the disc as best as the naked eye could tell. Could turn the wheel by hand with only some light surface friction. Started the gradual bedding in process by going around local road which is 4 roundabouts seperated by a mile between each to allow them to cool off. Approached each roundabout with caution due to new set up and the fact that is was raining, so any load would have been minimal
Returned home removed wheel to check for leaks etc. Feeeeecccckkkk !!!!
Discs were very warm but you could pick them up with bare hands (just). So no excessive heat in my mind. No where near the abuse they would have been getting later on.
Luckily this became apparant during local pottering about. Plan on doing more track days with the car this year and dread to think what would have happened at the end of the park straight at Snetterton if they let go there. Shudder
Upgraded replacement dics sent out by supplier today, as there is no way this brand will be gracing any car of mine in the future
Andy
>> Edited by The Moosehunter on Tuesday 10th January 00:53
>> Edited by The Moosehunter on Tuesday 10th January 01:01
I'm presuming the diamond in the corner of the box is a bit of the clue, as is the black coating on them from new?
I have these same discs F & R on my Chim and have covered about 5k on them since fitting, I can only presume you had either a one off faulty disc or they produced a dodgy batch. I also know of several others who have fitted these discs and had no problems.
Have the manufacturer had a look and verified what caused the fault?
I can understand you not being happy but one faulty disc does not mean the entire brand should be labelled shite...
I have these same discs F & R on my Chim and have covered about 5k on them since fitting, I can only presume you had either a one off faulty disc or they produced a dodgy batch. I also know of several others who have fitted these discs and had no problems.
Have the manufacturer had a look and verified what caused the fault?
I can understand you not being happy but one faulty disc does not mean the entire brand should be labelled shite...
i agree with Zippee. I have these on my daily driver and they do get a fair amount of abuse. They have been on the car for over a year and they are fine, and I would reccommend them for upgrades to anyone as they were (at the time I bought them) one of the best aftermarket road disks available.
They have huge stopping power and good feel. I think you were just unlucky, or (without being rude) they were not fitted correctly! As long as the manufacturer sortd you out so that you are happy, I would personally stick with them!
They have huge stopping power and good feel. I think you were just unlucky, or (without being rude) they were not fitted correctly! As long as the manufacturer sortd you out so that you are happy, I would personally stick with them!
reeso said:
i agree with Zippee. I have these on my daily driver and they do get a fair amount of abuse. They have been on the car for over a year and they are fine, and I would reccommend them for upgrades to anyone as they were (at the time I bought them) one of the best aftermarket road disks available.
They have huge stopping power and good feel. I think you were just unlucky, or (without being rude) they were not fitted correctly! As long as the manufacturer sortd you out so that you are happy, I would personally stick with them!
It was with this in mind that I have chosen not to name the manufacturer. I was stuck in the position of not wanting to scaremonger, and also not wanting anyone else to potentially suffer damage or harm from a potentially faulty product
I take on board your fitting comment, and did ensure that the caliper was centalised,the pistons all function OK, new pads were fitted which are not too hard so as to cause excessive wear, free movement once all tightened and a gentle bedding in process.
The only thing which I could not check was the alignment of the parallel faces of the pad to disc. Any minor imperfection would have been taken out during the bedding in process, and as both surfaces have almost equal wear I assume everything is OK.
There would have to be some major mis-alignment for this damaged to have occured.
As mentioned I had researched this product prior to purchase and thought I was getting a well tried and tested product.
Replacement sitting on my desk. Different manufacturer.
I remember writing in this forum about brake dics I replaced the front set with a pair purchased from TVR in Blackpool, and was told on no account to fit cross drilled or grooved on to my Griff.
I did mention to the parts manager that there are plenty of performanc quality cars on the road with both cross drilled and grooved discs,
While that is true and there would be no problem with these discs if fitted there are hundreds of manufactures of dubious standards.
It looks very much like materiel filure due to heat,, not impact damage , the base metal is either substandard and just not to the correct spec. Proberly the blanks are made in China or Korea and then sold on for finishingby various companys and this is what you get.
You were very lucky
Go to the people that know where the blanks come from TVR
Simon
I did mention to the parts manager that there are plenty of performanc quality cars on the road with both cross drilled and grooved discs,
While that is true and there would be no problem with these discs if fitted there are hundreds of manufactures of dubious standards.
It looks very much like materiel filure due to heat,, not impact damage , the base metal is either substandard and just not to the correct spec. Proberly the blanks are made in China or Korea and then sold on for finishingby various companys and this is what you get.
You were very lucky
Go to the people that know where the blanks come from TVR
Simon
--- sound of running feet as I run out to check my brakes ----
Nope they are fine *whew* about 7k miles so far on black diamond drilled and grooved disks front and rear , no signs of cracks or even much wear which considering the hammering they get is good news. FYI Still on standard calipers with EBC reds.
Maybe this was a one off ?
Dodsy
Nope they are fine *whew* about 7k miles so far on black diamond drilled and grooved disks front and rear , no signs of cracks or even much wear which considering the hammering they get is good news. FYI Still on standard calipers with EBC reds.
Maybe this was a one off ?
Dodsy
Discs are now back at the manufacturers for inspection
After a thorough triple check of all the alignment and movement of parts, they have been replaced with Tarox G88's which are bedding in very nicely and are getting to the stage where I can start loading them up to really feel the difference (I hope)
I will keep you guys informed as to the findings of the other brand, as I would hate for similar problems with possibly more catastophic results
I count myself very lucky / unlucky
Cheers
After a thorough triple check of all the alignment and movement of parts, they have been replaced with Tarox G88's which are bedding in very nicely and are getting to the stage where I can start loading them up to really feel the difference (I hope)
I will keep you guys informed as to the findings of the other brand, as I would hate for similar problems with possibly more catastophic results
I count myself very lucky / unlucky
Cheers
Equinox said:
Any update yet???
I am still waiting for the results of the inspection, however the car has just had it's MOT and I asked the guys (who I know and are very reliable and trustworthy) have checked the brake balance and it's spot on.
The new discs are working well and braking is vastly improved over the standard 240mm's.
I will chase them up for an outcome on Monday. I would strongly advise anyone who recognises the logo on the above photo to keep a very close eye on their discs regardless of the mileage covered, including the inward facing section of the disc that requires crwaling in the wheel arch
Cheers
Sorry to drag this one up, but I have just seen a similar looking pair on eBay for sale, under Griff listing.
I am sure that there will be many people who are satisfied with this manufacturer, and fair play to them.
I have a little bit of a clue as to what I'm doing and I wouldn't touch these with someone elses.
I have had my Tarox on for the last 10 months with the same set up, and they have been faultless.
I never heard back from the supplier, which would suprise me if it was not a manufacturing fault
I'd hate for this to happen to anybody at speed, and apologise if this is your listing and I deter any potential bidders but I feel that this is a pretty serious concern.
Just passing on what I've experienced. Not intended to be a libelous posting.
Especially as I haven't named them
Moose
I am sure that there will be many people who are satisfied with this manufacturer, and fair play to them.
I have a little bit of a clue as to what I'm doing and I wouldn't touch these with someone elses.
I have had my Tarox on for the last 10 months with the same set up, and they have been faultless.
I never heard back from the supplier, which would suprise me if it was not a manufacturing fault
I'd hate for this to happen to anybody at speed, and apologise if this is your listing and I deter any potential bidders but I feel that this is a pretty serious concern.
Just passing on what I've experienced. Not intended to be a libelous posting.
Especially as I haven't named them
Moose
Hiya. Which pads do you use with the Tarox (grooved G88?) discs? A previous owner fitted them and I replaced them like for like when they wore out, but they don`t feel as sharp with the standard pads I`ve fitted and I don`t know who`s pads were on before. I`d really like that feel back.
BTW, Did you have trouble getting the right Tarox discs first time? Their recommended ones didn`t fit my standard callipers (disc to flange offset) so my drawing of the old ones was sent to the factory to identify the correct fitment!
I appreciate your warning and the fact you`ve handled your very serious safety concern for the product that failed in a balanced and fair manner.
BTW, Did you have trouble getting the right Tarox discs first time? Their recommended ones didn`t fit my standard callipers (disc to flange offset) so my drawing of the old ones was sent to the factory to identify the correct fitment!
I appreciate your warning and the fact you`ve handled your very serious safety concern for the product that failed in a balanced and fair manner.
gruffgriff said:
Hiya. Which pads do you use with the Tarox (grooved G88?) discs? A previous owner fitted them and I replaced them like for like when they wore out, but they don`t feel as sharp with the standard pads I`ve fitted and I don`t know who`s pads were on before. I`d really like that feel back.
BTW, Did you have trouble getting the right Tarox discs first time? Their recommended ones didn`t fit my standard callipers (disc to flange offset) so my drawing of the old ones was sent to the factory to identify the correct fitment!
I appreciate your warning and the fact you`ve handled your very serious safety concern for the product that failed in a balanced and fair manner.
BTW, Did you have trouble getting the right Tarox discs first time? Their recommended ones didn`t fit my standard callipers (disc to flange offset) so my drawing of the old ones was sent to the factory to identify the correct fitment!
I appreciate your warning and the fact you`ve handled your very serious safety concern for the product that failed in a balanced and fair manner.
Cheers Gruff
I have Wilwood calipers on mine, and am using Mintex M1144's for road use, and have some Wilwood Poly E pads set aside for track days. They are a fantastic combination.
The 1144's don't have quite the bite that the "E"'s do, but I was suffering pretty bad squealing when using the E's , so tried the 1144's just to see if they erradicated it. Which they did (sort of...ish).
Been reccomended the Ferodo DS2000's, never used them but a lot of respected people have suggested that route. Sadly not readily available for the Superlite calipers I have.
My Tarox discs were standard Cossie 500 discs (283mm) and as I was changing calipers didn't relly matter that they may have been different offset, so can't help there I'm afraid
Try the 1144's if you like spirited driving, I don't think you'll be disappointed.
Cheers
Andy
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