I have a mk3 estate dsg L&K so it has the DCC

 

has anyone experienced any bad vibrations starting at approx 60mph and get progressively worse, sweet spot is between 70-77mph and then you can drive through it to lessen but not eliminate 😡

 

I have had all 4 wheels balanced, no change.

 

I had a tyre wall fail (no warning and no damage to cause it) and have had two brand new Goodyear F1 Assy 5 fitted.

 

no change, if anything it “might” have gotten worse 🤷‍♂️
 

any ideas would be welcome 🙏🏻 

 

Neil

Buckled wheel would be my guess.

23 minutes ago, D402 said:

Buckled wheel would be my guess.

I thought that but wouldn’t that show up on the balance machine?

 

I did look at a few of the rims when they where done and they looked running true to me.

 

also the vibrations I feel through the steering wheel and through my bum - as a result I can’t determine whether it’s front or rear that’s the problem.

 

whilst I have heard about wheels buckling, they have always been big 20+ inch wheels with really low profile tyres.  Mine are the standard 18” rims can it happen to this size 

A wheel can be buckled but still balance perfectly, and only a tiny distortion is needed to make a vibration you can feel. This recent thread mentions Skoda specifying 0.5mm as the maximum allowable run-out.

 

Vibration through the steering wheel suggests that a front wheel is the problem, you could try swapping wheels front to rear to see if that makes any difference.

4 hours ago, D402 said:

Vibration through the steering wheel suggests that a front wheel is the problem, you could try swapping wheels front to rear to see if that makes any difference.

I was going to put the new tyres on the front anyway as I always do, but as I said I get vibration through wheel AND bum, so it feels like both ends is affected.

 

will see what happens when I swap them

Who balanced your wheels?  I've had no end of trouble with the national chain that is specified by the leasing company.  They don't seem to be able to balance anything.

8 hours ago, daveo138 said:

Who balanced your wheels?  I've had no end of trouble with the national chain that is specified by the leasing company.  They don't seem to be able to balance anything.

they where balanced by an independent tyre place, been around for years and very trusted by garages all around.

 

they balanced last time - I saw the machine say OK readings against all conditions against all wheels.

 

this time they put them on the machine and they still showed not balanced 🤯 did them again and this time fitted backs to front and viva versa.  
 

I took it for a drive and the wobbly feeling has gone 🎉🙏🏻,  but this car has DCC and should float over bumps and poor roads.  Mine doesn’t, it more crashes over potholes.  Floats, but wallows a lot too.

 

has anyone had poor experience after a number of years with their DCC suspension systems.

Superbs with 18 or 19 inch wheels don't float over potholes even with DCC. They always crash badly. They will remind you loudly where the joints in the road are too.

 

Floaty and wallowy is standard on Superbs. The DCC 3 basic settings just change bounciness and harshness in inverse proportion. And only by a little bit.  Wished I didn't spend so much on DCC. Especially when I read on Briskoda increasingly about DCC shockers failing and how much they cost to replace.

 

 

On 21/06/2021 at 20:05, xman said:

Superbs with 18 or 19 inch wheels don't float over potholes even with DCC. They always crash badly. They will remind you loudly where the joints in the road are too.

 

Floaty and wallowy is standard on Superbs. The DCC 3 basic settings just change bounciness and harshness in inverse proportion. And only by a little bit.  Wished I didn't spend so much on DCC. Especially when I read on Briskoda increasingly about DCC shockers failing and how much they cost to replace.

 

 

I don’t agree, until before lockdown 1 when I was working the car was almost air ride like, when set to comfort it floated over potholes and only when set to sport it would go over with a firm solid thump - but it felt ok and more comfortable than traditional suspension setups I’ve had.  I was made redundant and had a year out, then wanted to return to work and COVID hit, so that was another year 🤦‍♂️.  So for 2yrs I pretty much only got upto 40mph.  Then I got a job in April that meant driving on motorway, and straight away had the vibrations so have no idea where it has come from.

 

I have got rid of most of the vibrations by having the front wheels moved to the rear, and having them all rebalanced AGAIN 🤯

 

if it was the wheels I’d expect the wobble to be now coming from rear.  It’s ok, but there is still a feeling that there is something not quite right - a feeling which is unfamiliar and unfortunately hard to describe 😩🤦‍♂️ And I am unable to replicate it consistently.  Which means getting it diagnosed by dealer will be almost impossible.

If your wheels needed rebalancing again then your tyres are probably) internally faulty and damaged. Suspect the oldest tyres that are still fitted. After all, one mysteriously failed on sidewall without warning or external damage. Must have been a faulty tyre, and one of the set you had fitted.

 

If a tyre has been repaired after a puncture, the internal mushroom plug or vulncanising can become detatched and the wheel will feel all wobbly, been there and experienced that!

If you're certain it's not a buckled wheel I'd suggest it's castellated / sawtooth tyre wear on the rear. If you've swapped them front to back and the problem has stopped then it's more than likely that.

 

Always put the new rubber on the back to prevent this, it's a VAG trait

Take it to a garage that has a road force balancer. This spins the wheel/tyre against a roller with about 600kg of pressure and measures the forces the wheel imparts onto the roller as a result of inperfections in the rim or tyre. You can then rotate the tyre about the rim to cancel many of the forces much of the time. The machine will tell you if this is possible in your case. Wheels on new cars a balanced in this manner.

 

Spinning the wheel in air like a standard balancing machine doesn't tell the whole story if there is a problem. A perfect square wheel would balance no problem but you wouldn't want to drive on it.

 

This will at least give you conifdence in the wheels/tyres being ok incase there is another issue. 

 

https://www.balancemycar.co.uk/

 

 

 

3 hours ago, xman said:

If your wheels needed rebalancing again then your tyres are probably) internally faulty and damaged. Suspect the oldest tyres that are still fitted. After all, one mysteriously failed on sidewall without warning or external damage. Must have been a faulty tyre, and one of the set you had fitted.

 

If a tyre has been repaired after a puncture, the internal mushroom plug or vulncanising can become detatched and the wheel will feel all wobbly, been there and experienced that!

The tyre that failed was on the rear, and both sides fitted at same time by me within first year I had the car now 4yrs later.  I’ve done about 15-20k and they where due to be changed - the failure brought my plans forward a fortnight.

 

Never had a puncture, so no repairs, I had had them balanced 2 weeks prior to failure for the vibration with no change, but we looked at the tyres and no bulges or mis-shapes and wheel spun true on the balancer 🤷‍♂️

1 hour ago, MarkyTDI said:

Take it to a garage that has a road force balancer. This spins the wheel/tyre against a roller with about 600kg of pressure and measures the forces the wheel imparts onto the roller as a result of inperfections in the rim or tyre. You can then rotate the tyre about the rim to cancel many of the forces much of the time. The machine will tell you if this is possible in your case. Wheels on new cars a balanced in this manner.

 

Spinning the wheel in air like a standard balancing machine doesn't tell the whole story if there is a problem. A perfect square wheel would balance no problem but you wouldn't want to drive on it.

 

This will at least give you conifdence in the wheels/tyres being ok incase there is another issue. 

 

https://www.balancemycar.co.uk/

 

 

 

The nearest one to me is 25miles away 🤯

 

Also the company I use is used by most dealerships in the area, as they are very well respected and trusted in the field so the dealers don’t need to buy tyre fitting gear and train staff - they just nip to this fitter)

 

They fit and repair tyres for anything from go karts to McLarens, I’ve even see a Merc SLR McLaren in there.

 

in fact when they did mine they had just done an Audi S5 and Alpina V8T (BMW 5 series on steroids - nice 😎)

 

We rebalanced all the wheels, and paid particular attention when spinning and all ran true - we also moved the newly fitted wheels from rear to front, and the significant vibration has gone, but there is still something subtle there, but now the large vibration has gone there is also something else that I can’t put my finger on - it’s just not has solid feeling as I remember it.

3 hours ago, Patent said:

If you're certain it's not a buckled wheel I'd suggest it's castellated / sawtooth tyre wear on the rear. If you've swapped them front to back and the problem has stopped then it's more than likely that.

 

Always put the new rubber on the back to prevent this, it's a VAG trait

The vibration I had was through the steering significantly, we have rebalance all the wheels again, and checked they ran true, and the failure I had was on the rear so it was the rear tyres that had been replaced.

 

when I rebalanced the wheels I had the wheels swapped rear to front - so the new tyres are now on the front, and the mega vibration has gone.  But there is still something not quite right.

 

I don’t know about VAG as a whole but in all my cars I had I have always fitted the new rubber to the driven wheels.

Sounds very much as if the problem are the tyres you now moved to the rear.

4 minutes ago, xman said:

Sounds very much as if the problem are the tyres you now moved to the rear.

that’s the strange bit, the tyres have been on 3yrs - I had done about 5k miles on them before I got made redundant in Dec 2018, then I did little mileage for 2yrs (about 4K but only at upto dual carriageway speeds) because of choice and COVID lockdowns.  Now got a new job, and doing mileage again, especially motorways and this vibration has appeared from nowhere.

 

it’s very strange.

10 hours ago, taurean7 said:

I did little mileage for 2yrs (about 4K ... doing mileage again, especially motorways and this vibration has appeared from nowhere.

Maybe the tyres are out of round from sitting still so long.

Could also be a bearing, track rod end or suspension bushes on the way out as well...

4 hours ago, skomaz said:

Could also be a bearing, track rod end or suspension bushes on the way out as well...

Those are the next areas of suspicion for me, car being serviced this week so will advise what I’ve done and ask them to look at those places as it is spoiling the driving pleasure I used to have with this car.

 

Especially as I’ll be looking to upgrade to a newer one sometime later this year.

Edited 26 June, 20214 yr by taurean7

5 hours ago, KenONeill said:

Maybe the tyres are out of round from sitting still so long.

That is a suspicion, but I did try and drive the car every few days to avoid that.

 

I have a caravan so I am aware of that has an issue, and bought plastic trays shaped to the tyres for it and I park it on them which spreads the load to avoid flat spots.

 

The car I thought I was doing enough to avoid 🤔🤷‍♂️

6 hours ago, skomaz said:

Could also be a bearing, track rod end or suspension bushes on the way out as well...

One test you could do if it happens in a narrow speed range is manually change gear, if it changes then you possibly have a bearing in gearbox (or engine) which is not running true.  Could also be a drivetrain joint.  
 

But I suspect it is tyre or rim related