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Brakes. Again. Sigh
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Philip1972
 


Member Since: 10 Mar 2017
Location: Gloucestershire
Posts: 1072

United Kingdom 2011 Discovery 4 3.0 SDV6 GS Auto Zermatt SilverDiscovery 4
Brakes. Again. Sigh

Second set of front discs, this time genuine LR discs and pads.

Very gentle running in, over a good few hundred miles and I never sit with my foot on the brake at lights etc.

2000 miles ish and wobble when braking is back Censored

Cant feel any pulsating through pedal, but steering wheel wobbles-especially when braking at higher speeds.

Worse when hot.

To recap, the car has had:
New calipers front
New lower arms
New ARB bushes and drop links
New inner and outer track rods
New wheel bearings

Rear discs are old-but could they create a steering wheel wobble?

I have a dial thing to measure run out, but can never stick the magnetic end to anything well enough to test properly, but I dont believe that all these discs can be bent when new.

WTF is going on?
  
Post #201880215th Jan 2019 2:24 pm
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Jubbly
 


Member Since: 20 Nov 2016
Location: Stourbridge
Posts: 401

United Kingdom 

sounds like my issue, mine is now solved.

It was only a tiny bit of rust on the passengers side hub, i rubbed it down by hand with sand paper and I had issues with wheel vibration through steering wheel when breaking 30 mph plus, replaced disc's again but my brother has his own garage and we measured there was still 8 thou runout. Took the disk off again and got the DA on the hub to clean the rust off, refitted the disc measure run out at 1-2 thousands and no vibrations since.

Very Happy
 Jaguar I-Pace HSE imminent.
Gone HSE with Flappy Paddles. IID BT tool. RLD Spare Protector, Altox GPS.

 
 
Post #201881015th Jan 2019 2:42 pm
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Philip1972
 


Member Since: 10 Mar 2017
Location: Gloucestershire
Posts: 1072

United Kingdom 2011 Discovery 4 3.0 SDV6 GS Auto Zermatt SilverDiscovery 4

Interesting!

i do clean the hubs when I change discs, but I will get the wheels off again and give them some mecanical force with a DA.
  
Post #201881215th Jan 2019 2:51 pm
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lynalldiscovery
 


Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274

United Kingdom 2006 Discovery 3 TDV6 Metropolis LE Auto Bonatti GreyDiscovery 3

Discs and drums can go out of shape depending on how they are stored and handled.
  
Post #201881815th Jan 2019 3:14 pm
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Philip1972
 


Member Since: 10 Mar 2017
Location: Gloucestershire
Posts: 1072

United Kingdom 2011 Discovery 4 3.0 SDV6 GS Auto Zermatt SilverDiscovery 4

My rears are very worn and old-I have no idea when they were changed last, but they are rusty etc.

Could they be doing it?
  
Post #201882115th Jan 2019 3:22 pm
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Jubbly
 


Member Since: 20 Nov 2016
Location: Stourbridge
Posts: 401

United Kingdom 

I don't think you would feel rear brakes through the steering wheel.
 Jaguar I-Pace HSE imminent.
Gone HSE with Flappy Paddles. IID BT tool. RLD Spare Protector, Altox GPS.

 
 
Post #201886015th Jan 2019 5:14 pm
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Gareth
Site Moderator 


Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26683

United Kingdom 

My D4 has suffered from wobbly steering under braking on and off from new! Tried all sorts of different solutions, but the fact is that it has never got through a set of pads without needing discs too. Latest set have lasted 18 months, and about 16k miles, but are wobbling like a jelly now!!

It always has smooth brakes when a new set is fitted. It needs front suspension arms soon, so will be leaving it for now and putting up with it until I get chance to get the whole lot done.
  
Post #201886515th Jan 2019 5:38 pm
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8043

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

Philip1972 wrote:
My rears are very worn and old-I have no idea when they were changed last, but they are rusty etc.

Could they be doing it?


Only one way to find out! Whistle
What about lower steering column uj?
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #201887615th Jan 2019 6:12 pm
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Philip1972
 


Member Since: 10 Mar 2017
Location: Gloucestershire
Posts: 1072

United Kingdom 2011 Discovery 4 3.0 SDV6 GS Auto Zermatt SilverDiscovery 4

lol true! I guess I will do them soon.

Is the steering column UJ a hard job?
  
Post #201887915th Jan 2019 6:27 pm
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8043

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

No!
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #201890615th Jan 2019 7:51 pm
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Philip1972
 


Member Since: 10 Mar 2017
Location: Gloucestershire
Posts: 1072

United Kingdom 2011 Discovery 4 3.0 SDV6 GS Auto Zermatt SilverDiscovery 4

I will add it to the list lol.

And google how to do it!
  
Post #201890815th Jan 2019 8:01 pm
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2Springers
 


Member Since: 12 Apr 2012
Location: Surrey
Posts: 109

United Kingdom 2011 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

Another thing to check - scoring on the disc.

Mine suddenly picked up a wobble when braking from motorway speed down to around 50mph - checked the front discs and found one badly scored on the inside so not obvious just looking through the wheel.
  
Post #201997618th Jan 2019 10:09 pm
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PCT3
 


Member Since: 13 May 2017
Location: Kent
Posts: 144

England 2007 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Do you clean your new discs probably? They are covered in an anti corrosion coating which needs to be fully removed before fitting, plus all mating surfaces should be cleaned to bright metal then lightly copper sslipped to add future removal cleaning of the hub and ensuring flat surfaced hould all be done with hand tools preferably with something lick scotch brite. Very easy to remove a couple of thou on hub giving you run out.
Noticed you have changed the wheel bearings too was this done correctly? Over the years have come across some very poor workman ship
 Discovery 3 HSE 07
Discovery 1, Search & Rescue SE4x4 Responce
Fiat Decato motor home
Mazda MX5 
 
Post #202000319th Jan 2019 7:10 am
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Philip1972
 


Member Since: 10 Mar 2017
Location: Gloucestershire
Posts: 1072

United Kingdom 2011 Discovery 4 3.0 SDV6 GS Auto Zermatt SilverDiscovery 4

Thanks for the reply. When I get round to it I will do all the above, although I do most of those anyway, cant harm to do it again!

I measured the hubs with my DTI and they seemed OK. Although as stated above, I cant get a REALLY solid magnetic lock on the car with the DTI.
  
Post #202002219th Jan 2019 8:45 am
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Corris MacGray
 


Member Since: 23 Aug 2017
Location: OutofTown
Posts: 55

England 2016 Discovery 4 3.0 TDV6 Commercial Auto Corris GreyDiscovery 4

I've read the above. Ours too has just got its braking steering wobble back less than a year and not many thousand miles after new discs and pads fitted under warranty.

Life should not be this complicated Sad

CMG
  
Post #20245741st Feb 2019 11:07 pm
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