Citroen c5 x7 station vibrates when going from 110- and up

[Sjaar]

I have a strange vibration when going from 110 and up, the car is shaking. There is not noticeable shake in the steering wheel, so I don’t think it’s tires. I was thinking a break discs, but all those should be come also to steering wheel.
It’s an automatic with 2.2 hdi with 204hp

[GiveMeABreak]

It could be lots of things - warped brake discs, more noticeable if you touch the brakes lightly and the vibration increases. But equally could be incorrectly balanced tyres, the tracking can be out or driveshafts.

It really needs all the above being checked.

[Sloppysod]

It may not be tyres but it is worth getting them checked. Any while you are at it check the wheels are still round, I had a car and the wheels were oval on the inner edge, the Tyre fitter said he see it alot and it was probably down to hitting speed bumps too fast.
My rule of thumb, is confirm the simple & cheap to fix possible causes are okay first.

[MattBLancs]

Other thing to check is swap tyres front to back - if rear wheel was badly out of balance then you wouldn't feel it through the wheel but would through the body.

If swapping front to back then gives you a shaking steering wheel then it's one of those rear tyres.

If no change at all could easily rule out the tyres.

Matt

[Sloppysod]

Just as a side note.
I had an Austin Princess 1800 that I knew had a wheel shake at about 65-75mph, well I let my Mum borrow the car to go to London, when she got back I asked how did it go? Her reply was "the steering vibrated a bit so I put my foot down and it stopped"
It was wheels out of balance.

On a more serious note, I have seen flats on tyres where the car has not been moved for a long while.

[davoxx]

So I have this a vibration over the speed of 110km

Checked the car, I had a damaged cv boot driver side changed that.
But the driveshaft also was ruined, so I changed that too.
The 19in wheel was buckled on the inside as well because 'they are too big and stupid for Irish roads'. So I changed both front wheels with 18in ones.
Still a vibration, so I think the wheel bearing is gone as the vibration is around 110km and worse when I'm breaking.
I'm going to change that next.

The cv boot was damaged by a leak from the drivers strut which was caused by the lovely NCT guys when the previous owner got the car first nct'd.

[Ross_K]

I have a strange vibration when going from 110 and up, the car is shaking. There is not noticeable shake in the steering wheel, so I don’t think it’s tires. I was thinking a break discs, but all those should be come also to steering wheel.
It’s an automatic with 2.2 hdi with 204hp

Had a similar problem on a Honda FR-V I owned a few years ago - crazy vibration between 50-65mph, which turned out to be a slightly buckled wheel.

If you've got a full-size spare wheel, put that on and see if the vibration goes away (or move the front wheels to the back, and vice versa + see if the vibration has moved too). Try the cheap fixes first

[MattBLancs]

Just as a side note.
I had an Austin Princess 1800 that I knew had a wheel shake at about 65-75mph, well I let my Mum borrow the car to go to London, when she got back I asked how did it go? Her reply was "the steering vibrated a bit so I put my foot down and it stopped"
It was wheels out of balance.

On a more serious note, I have seen flats on tyres where the car has not been moved for a long while.

Funny how limited the road speed range can be at which resonance occurs. A friend had a MK2 Fiesta that badly needed the wheels balancing. About 58 to 62 mph indicated felt like you were a dead cert for "vibration white finger" but on your feet on the front passenger floorpan! 70mph = no vibration at all. Never drove it, so not sure quite how violent the sensation through the steering wheel must have been, but he didn't do 60 often, so can guess!

From what's since been posted we can rule out tyres and wheels (as have been swapped)

Wheel bearing failing in my experience was noise rather than vibration through the body. Droning noise.

Also has some cheap tyres on a 306 that made a right din - again very speed dependant 20mph, 40 mph = loud, rest of the time ok

Matt

[Sjaar]

Thank you all, it turned out it was smth with the hydro suspension, something was worn out.