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[ians]

I noticed when on hols in the Lakes that at the end of a long descent of the passes that I was getting vibration under braking,  presumably heat related as it went away quickly and I haven't noticed it before or after.  (Actually my previous Omega did the same thing, but never encountered it on any previous car).

Is this common?  Sign I need new pads maybe..?

[old cruiser]

Could be discs warping under extreme heat, have a look at them and see if there's a large lip on the outer of the discs if so then replace them along with new pads.
Cheers Pete

[Mike Collins]

While you are looking at the front discs, it is worth checking the pins that the caliper slides on. If they become dry, sticky or corroded, that can give vibration or shuddering.

[Dazzler]

On a steep hill try and keep in a low gear as long as poss to try and save the brakes from overheating as fast.

[TheBoy]

cycle the brakes if poss on long decents...

[cem_devecioglu]

if disc surface when very hot meet with big amounts of water become how you say "fubar"

Changing the pads only will not cure. Here if the discs are new they cut the surface but I dont think thats a good idea..

[Dave-C]

If the discs are old and have sustained lots of heat in the past, they may be "Glazed"  Easy to tell, they visually look as though they have been laquered.  My other concern is that your rear brakes may not be operating fully, putting more of the bias on the front brakes.  Changed my rear discs n' pads last week, the car now feels as though it is braking all round rather than nose diving, if you get my drift..

DC
Wiith a TC you can swap the lot front & rear for less than £200 D.I.Y..............

[ians]

Thanks for all the posts.

The front disks look fine, bit of a lip but nothing dramatic.  I would have thought that if they had warped under the heat they wouldn't recover.   There was no sign of the problem within a minute of getting on the flat.   No water around (amazingly..) and I'd like to think I'm driving sympathetically to the brakes on the descent.

What I find curious is my other Omega had a similar behaviour but none of the other cars I've had incl. big Saabs have done the same.

Anyway, when I get my wheels off (b'stard tyre fitters...) I'll give the brakes a closer look.

BTW as a matter of interest what is lifespan you'd expect to get from disks?

Cheers
Ian

[Dave-C]

40k -50k  

[Mike Collins]

My 2.6 Auto is still on the original discs at 12000, I think it's only had one pad change so far.

[Tafty]

My 2.6 Auto is still on the original discs at 12000, I think it's only had one pad change so far.

You're just showing off cause your cars still under 20K miles

[Mike Collins]

Now that I have reread my post, what I have done is left off a zero! Should read 120,000. Never could type.

[davlad22]

^^^^^^^^^^^^^
Oh, it'll be ready for the scrapyard shortly then  

Interesting though, because brakes tend to take more of a hammering on an auto, without having the control of a proper gearbox  

[ians]

nicely run in I would have said