I have recently started driving distances after being out of work during lockdown.

 

At motorway speeds I have noticed a vibration through the steering (and pedals) and can feel it through the seat (like from the rear).

 

I thought wheels out of balance so had them done.  They where massively out of balance, so expected it fixed.  Whilst it did improve, it didn’t correct it all.

 

whilst in lockdown I had my cambelt change done, but drove very few miles after this happening.

 

I am struggling to think what could cause this problem.  To the point I am even considering flat spots on tyres as car was parked for weeks at a time as nowhere needed to drive anywhere.

 

can anybody else advise possible options to investigate.

 

thx

It may be due to rust on the rear discs.

 

Even though I park my Superb in a dry, slightly heated garage with the parking brake off, after a few days , I found the rear pads stuck to the rear discs due to a build up of rust on the rear discs - but the rust is only in the area where the pads are. The inner (hidden) face has much more rust than the outer. Not sure why this is, I think the pads are somehow hygroscopic, as it even happens if the car was throughly dry and the brakes warmed thoroughly to ensure they are completely dry before parking up in the garage.

 

If left for over a couple of weeks, the rear wheels will thump badly when I drive, even without any braking, when its even worse. It takes a lot of heavy braking to clean and slowly restore a quiet ride.

 

If you've been parked for a long period (weeks) outside, you may find the rear discs are completely knackered on the inner faces (which can only be seen on a ramp).

 

The rear discs/pads are known to be made out of rubbish low grade material (see other threads in the Superb 3 forum)

 

On the other hand, if the tyres got that badly out of balance you may find that they are no longer circular, but are now mishaped. I had this happen to a pair of Michelin cross climates (on a Fabia) for reasons unknown except it had been in the dealer for major repairs to the gearbox and front suspension and they had swapped the tyre positions again for reasons unknown. Try swapping tyres front to back and see if there is a difference.

 

 

Edited 16 May, 20215 yr by xman