I have a 2016 GT speed. It’s an amazing car but I’ve been dealing with a steering wheel vibration for the last year.
Ive made the dealership replace both front shocks, the steering rack and I’ve had the control arms replaced in the past all under Bentley extended warranty. I’ve had all 4 wheels straightened as much as possible. I’ve bought 2 sets of new tires both of which are Michelin.

The vibration gets worse when going above 70 and turning the steering wheel, as in changing lanes on the highway. It feels like the steering wheel is quivering when turning the wheel.
just wondering if anyone has any thoughts on what this could possibly be. Thinking about pursuing legal action due to the amount of money I’ve spent without a fix.

 

Why did they need straightening? Were they damaged?

A vibration that gets worse above 70 will usually be something rotating: tyre, brake disc, wheel, wheel bearing, front drive axles, or front CV joints.

Was it doing it immediately after replacing the tyres? Or only after a while? If the car doesn't get much use, it could be flat-spotting the tyres (even if they're new).

 

When I had a similar problem on an '09 my indie turned the brake rotors and all was well after that.

 

Initially there was a vibration present at all times, then the shop changed my front right shock and after that, I noticed a vibration when turning the wheel/changing lanes at highway speeds. I will try asking them to turn the rotors as I did have those done recently as well.

 

A different steering angle isn't going to change much with respect to the tyres, wheels, or brake rotors (unless your bearings are completely shot, but presumably the dealer would have noticed that).

A different steering angle *will* change where the load is on the front CV joints. Presumably there's a way to check them for wear?

(Brake rotors usually show up as a vibration when braking.)

 

Wheel bearings? I've had slight vibration issues when turning at speed with both front wheel bearings. Replacing them fixed the problem.

 

 

the dealership replaced the wheel bearings after I had a grinding noise from the front. They didn’t lubricate them which caused a clicking noise when turning the wheels at slow speeds. I had them lubricated eventually which solved the problem. Did you have a noise from the wheel bearing?

 

Yes. Intermittent and barely audible at first, and it got gradually worse as usual with a problem like this. I just noticed a couple of days ago that a similar faint noise has returned, this time from the rear, accompanied with a slight vibration at highway speeds. An educated guess is passenger side rear wheel bearing at this point. Fortunately these are very easy to replace and available as aftermarket replacement parts for €58 each as a kit with the flange, €35 without. There's no point in paying €500 or more for OEM, it's a VW Phaeton / Audi A8 item (4E0498625B, 4F0598625A, 4E0498625D, 4E0407625D and so on).

 

How long between replacement and getting them lubed? If they were really put in dry (hard to imagine), I wonder if it would have accelerated wear enough that they're already shot?

 

Only when turning it slightly to the left.

 

Wheel Bearings.... You changed everything else!