S40 - Steering will shake

[joeyboy130]

Morning all,

I have a S40 2009 r design powershift. When i brake i get steering wheel shake. Sometimes its bad and sometimes its not so bad and at low speed it doesnt do it. Any ideas?

[Markos01]

Originally Posted by joeyboy130

Morning all,

I have a S40 2009 r design powershift. When i brake i get steering wheel shake. Sometimes its bad and sometimes its not so bad and at low speed it doesnt do it. Any ideas?

Brake discs might be warped, but on my last BMW I had to fight the steering wheel when braking hard, turned out to be front tyres even though they had no visible signs of problems.

[joeyboy130]

Originally Posted by Markos01

Brake discs might be warped, but on my last BMW I had to fight the steering wheel when braking hard, turned out to be front tyres even though they had no visible signs of problems.

I had my brakes checked and they were all good i got told and all 4 tyres are only 3 months old. so not sure

[Welton]

Not sure how they "checked" your brakes? a visual inspection will identify how much material is left on the pads or how worn the discs appear but to check for warping you'd need a gauge to measure run-out as the discs rotate (not a 5 min job).

Anyway if the brakes are all good then the front lower wishbone bushes will create a vibration when braking (if the bushes are worn out) usually accompanied by a 'wandering' feeling to the steering over uneven surfaces.

[Missing Lincs]

Originally Posted by joeyboy130

I had my brakes checked and they were all good i got told and all 4 tyres are only 3 months old. so not sure

Hello joeyboy

Can you feel any vibration or shaking through the steering wheel at higher speeds when you're not braking?

Does the shaking change speed depending on how fast you are going when you brake?

Can you feel any pulsing through the brake pedal (also speed dependent)?

[joeyboy130]

Originally Posted by Missing Lincs

Hello joeyboy

Can you feel any vibration or shaking through the steering wheel at higher speeds when you're not braking?

Does the shaking change speed depending on how fast you are going when you brake?

Can you feel any pulsing through the brake pedal (also speed dependent)?

No vibration in the steering wheel when not braking. THe shaking is usually the same at different speeds. Not sure about the brake pedal i will have to check when i next drive

[LizardOfBodom]

Lower Control Arms bushing can cause this when worn. You would feel another symptoms aswell but maybe its most obvious when you brake. Its a common failure point on our cars anyway so worth checking.