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Bouncing at lower speeds
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PeterTh
 


Member Since: 06 Sep 2013
Location: Alunda
Posts: 330

Sweden 2011 Discovery 4 3.0 TDV6 S Auto Orkney GreyDiscovery 4
Bouncing at lower speeds

Hello,
I have a weird problem that is currently nagging me. I have a 2011 D4 automatic and I have a vibration or maybe more like a "bouncing" between 40-55 km/h. It goes away at speeds over 60 km/h. It feels like a flat spot on a tyre or similar and increase in frequency with increased speed. I can feel it in the seat and not in the steeringwheel so I assume it is in the rear. So far I have checked:


Harmonic balancer weights are loose and moving

Rear propshaft bearing looks ok

Rear brakes are all relatively new, including EPB and there is no heat at all

No play in any wheel bearings

Wheels are all balanced less than two months ago and pressures are ok. No obvious faults when inspecting tyres.

No difference in P or N

Car has done 260.000 km and is still on original suspension and drive shafts but I can not see any obvious problems when car is on the lift. I will try to move around tyres but haven´t done that yet.


I am a little bit out of ideas so anyone..?


//Peter
 2011 Discovery 4 3.0 TDV6 S Automatic
1999 Discovery 2 V8 ES Automatic

Earlier
2006 Discovery 3 TDV6 SE Automatic
1996 Discovery 300 Tdi ES Automatic
1975 Series 3 2.25 diesel

Nanocom Evolution for D2 V8, D3 and D4

Working kelpies for working the sheep
Dog Sheep Sheep Sheep Sheep Sheep Sheep 
 
Post #21117059th Jan 2020 2:11 pm
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Weyboat
 


Member Since: 13 Apr 2018
Location: Weymouth
Posts: 261

England 2015 Discovery 4 3.0 SDV6 HSE Auto Corris GreyDiscovery 4

Possibly water inside a tyre?
I read about this happening to someone and the symptoms were just like yours.
Can't remember where I read it though, not on this forum I think..
 Gone 2016 Landmark D4
Current 2015 HSE D4 - AKA - 'Gandalf the Grey' 
 
Post #21117239th Jan 2020 3:50 pm
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Weyboat
 


Member Since: 13 Apr 2018
Location: Weymouth
Posts: 261

England 2015 Discovery 4 3.0 SDV6 HSE Auto Corris GreyDiscovery 4

Think it was this thread...
https://us.lexusownersclub.com/forums/topi...vibration/
 Gone 2016 Landmark D4
Current 2015 HSE D4 - AKA - 'Gandalf the Grey' 
 
Post #21117269th Jan 2020 3:59 pm
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ronp
 


Member Since: 29 Nov 2006
Location: North Yorkshire
Posts: 15208

United Kingdom 2014 Discovery 4 3.0 SDV6 HSE Auto Corris GreyDiscovery 4

I take it your suspension is working ok and it's not sitting on the bump stops.
e.g. in access mode, then automatically lifting at higher speed ?
 🏴󠁧󠁢󠁳󠁣󠁴󠁿  
Post #21117359th Jan 2020 4:40 pm
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PeterTh
 


Member Since: 06 Sep 2013
Location: Alunda
Posts: 330

Sweden 2011 Discovery 4 3.0 TDV6 S Auto Orkney GreyDiscovery 4

Hi,
Suspension works perfect so no problems there. No other codes either.

Will try to check for water but it feels like a longshot...

Thanks for your replies!

//Peter
 2011 Discovery 4 3.0 TDV6 S Automatic
1999 Discovery 2 V8 ES Automatic

Earlier
2006 Discovery 3 TDV6 SE Automatic
1996 Discovery 300 Tdi ES Automatic
1975 Series 3 2.25 diesel

Nanocom Evolution for D2 V8, D3 and D4

Working kelpies for working the sheep
Dog Sheep Sheep Sheep Sheep Sheep Sheep 
 
Post #21117759th Jan 2020 7:33 pm
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PeterTh
 


Member Since: 06 Sep 2013
Location: Alunda
Posts: 330

Sweden 2011 Discovery 4 3.0 TDV6 S Auto Orkney GreyDiscovery 4

The problem presented itself this morning. Got a call from my wife who was driving for work. -"Rear right tyre is flat, help". This is what I found:



and this:


I checked this tyre just a day ago. I assume it was damaged which caused the bouncing.

//Peter
 2011 Discovery 4 3.0 TDV6 S Automatic
1999 Discovery 2 V8 ES Automatic

Earlier
2006 Discovery 3 TDV6 SE Automatic
1996 Discovery 300 Tdi ES Automatic
1975 Series 3 2.25 diesel

Nanocom Evolution for D2 V8, D3 and D4

Working kelpies for working the sheep
Dog Sheep Sheep Sheep Sheep Sheep Sheep 
 
Post #211188410th Jan 2020 11:20 am
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ianm27
 


Member Since: 02 Jun 2016
Location: Hertfordshire
Posts: 2154

England 2012 Discovery 4 3.0 SDV6 GS Auto Orkney GreyDiscovery 4

Shocked that's some damage

Glad you found the cause and that the tyre didn't burst whilst being driven
 Uncle Ray's spare wheel protector
Limo Tint
Blackvue front & rear dashcam
Cruise control switch pack
Bodsy's remote for FBH 
 
Post #211191310th Jan 2020 1:18 pm
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PeterTh
 


Member Since: 06 Sep 2013
Location: Alunda
Posts: 330

Sweden 2011 Discovery 4 3.0 TDV6 S Auto Orkney GreyDiscovery 4

It did burst while being driven but att low speed. The sidewall damage is from drivning 50-100 m with a flat tyre.

//Peter
 2011 Discovery 4 3.0 TDV6 S Automatic
1999 Discovery 2 V8 ES Automatic

Earlier
2006 Discovery 3 TDV6 SE Automatic
1996 Discovery 300 Tdi ES Automatic
1975 Series 3 2.25 diesel

Nanocom Evolution for D2 V8, D3 and D4

Working kelpies for working the sheep
Dog Sheep Sheep Sheep Sheep Sheep Sheep 
 
Post #211191810th Jan 2020 2:03 pm
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