S60 Brakes: Warped front discs again ?

[Chris_Rogers]

Originally Posted by putnam

I had new front discs fitted to my 52 plate S60 a couple of months ago which cured the shudder that it had. I then had some new tyres fitted to the front wheels, not long after that the shudder returned. I have just found out during a recent service at a volvo dealers that the wheel bolts had been excessively over tightened so much so they had real difficulty removing them..I have just read somewhere that this overtightening can cause the discs to warp...Has anyone heard of this or had experience of this causing the warping of the discs ?........... any opinions gratefully recieved.
Thanks

Were genuine Volvo disks fitted?

I can only go on my experience but I've found the aftermarket ones warp quite quickly, and I don't do heavy braking. My rule is if you need to brake to get round a corner you've used too much fuel getting there.

[JIM C]

I fitted Delphi discs to my V70 and suffered no problems. The new discs on my S60 are also delphi. I think that quality pattern parts should cause no problems.

[imac]

I use Mintex discs and pads and they are fine

Agree with Chris' theory re corners, though.. unless you're pressing on.

[putnam]

The shuddering started with the original Volvo discs at 54,000 at which point I had them changed and now it is the 3rd set of discs all with the same symptoms ,so I am tending to think it isnt just the discs but something else causing this recurring problem. I wouldnt have thought that two sets after market discs would warp so quickly under normal driving ....Steve

[JIM C]

The discs could be checked with a dial test indicator for warping.

[S60-MBS]

Originally Posted by putnam

The shuddering started with the original Volvo discs at 54,000 at which point I had them changed and now it is the 3rd set of discs all with the same symptoms ,so I am tending to think it isnt just the discs but something else causing this recurring problem. I wouldnt have thought that two sets after market discs would warp so quickly under normal driving ....Steve

Hi mike as i said in my previous post i has same issues...so i got local garage investigate discs where found to be perfect ...look at link below theres pics of the end links you can see how chewed up there are ..
http://www.volvoforums.org.uk/showthread.php?t=45601

[Chris_Rogers]

Originally Posted by putnam

The shuddering started with the original Volvo discs at 54,000 at which point I had them changed and now it is the 3rd set of discs all with the same symptoms ,so I am tending to think it isnt just the discs but something else causing this recurring problem. I wouldnt have thought that two sets after market discs would warp so quickly under normal driving ....Steve

Well that was my experience with aftermarket disks from the club's supplier.

As has been said a dial guage test will prove it, but if the disks are warped you will be able to feel it as you come to a slow halt.

[JIM C]

Just out of interest what make were these after markets discs you had the problems with?
Thamks

[Chris_Rogers]

Originally Posted by JIM C

Just out of interest what make were these after markets discs you had the problems with?
Thamks

Club's supplier's own brand.

[JIM C]

Thanks will remember to not use there discs.