by Lanstrom » Tue Jun 28, 2016 11:24 am
by almayb » Tue Jun 28, 2016 5:51 pm
by Lanstrom » Tue Jun 28, 2016 5:55 pm
by johnbull » Tue Jun 28, 2016 6:07 pm
by S_J_P » Tue Jun 28, 2016 6:31 pm
by SplanK » Thu Jun 30, 2016 11:06 am
by Lanstrom » Thu Jun 30, 2016 1:16 pm
SplanK wrote:There could be a few reasons...
Brake discs very rarely 'warp' these days, it maybe more of a case that over time somebody has done some heavy braking, and kept the brake applied rather than releasing. This can cause a transfer of material from pad to disc which causes some issues.
The other reason, are we dealing with poor quality, or manuf issue with discs? I remember having a set of dimpled and grooved discs from EBC. They are (after research) shown to be of lower quality than expected and caused vibration shudder very quickly.
Pads will be swapped because of the discs need replacing. Its usually bad practice to swap discs without a pad change
You say that you have been told they are warped? Have you felt anything odd such as vibrations at high speed, or more specifically vibrations under braking? I would be inclined to get a 2nd opinion from somewhere else that you trust!
by SplanK » Thu Jun 30, 2016 1:40 pm
by Lanstrom » Thu Jun 30, 2016 1:49 pm
SplanK wrote:aah, then yes, disc would be damaged in some way then.
To be honest, its one of those things. It could be a defect or it could be the way you/previous owner has driven, or could be a fault in the calliper itself leading to excessive heat (you would tend to see the disc going blue of that happens though), or causing the pad to be in contact with the disc excessively. My guess, or I would hope that the techs would have given the setup a quick once over to ensure nothing untoward with anything else.
Sometimes these things do just happen and I would actually put it down to 'fair ware and tare'. It's a bit crappy when it happens (and costly if you let a garage do it rather than yourself). If it was a big problem, then we would be seeing all sorts of people reporting it, but it looks few and far between to be a common pattern yet.
If it is indeed material transfer between pad and disc, then its possible to get the discs machined if there is plenty of life on them so although it maybe to late for you now, if it happens in the future to anybody else, ask them to give you the discs back rather than disposing of them to see if they can be recovered and re-used later!
by Jerry1 » Tue Jul 05, 2016 2:05 pm