Quite noticeable at the moment, as I'm staying about 100 yards off a dual carriageway - so I drive to the end of the drive, then accelerate straight onto the A1...

As soon as the car gets between 50 and 60mph, I can feel juddering / vibration through the steering wheel.

However, after a couple of miles, once warmed up, the problem seems to have gone. Was worse this morning, due to the colder outside temp, but again vanished on warm-up.

So... is this:

1) tyre wear
2) balancing
3) steering
4) suspension

Car is a 6 month old TDv8 with 11.5k on the clock.

jampoTT wrote:

Quite noticeable at the moment, as I'm staying about 100 yards off a dual carriageway - so I drive to the end of the drive, then accelerate straight onto the A1...

As soon as the car gets between 50 and 60mph, I can feel juddering / vibration through the steering wheel.

However, after a couple of miles, once warmed up, the problem seems to have gone. Was worse this morning, due to the colder outside temp, but again vanished on warm-up.

So... is this:

1) tyre wear
2) balancing
3) steering
4) suspension

Car is a 6 month old TDv8 with 11.5k on the clock.

Mine does this too a little dealer has balanced the front wheels but it still does it a little at about 60.
I also have the illusive knocking through the steering wheel now car was fine now done 8000 miles  Blick with blick windows, big wheels, tow bar for nickin, side steps for the tart, DVD screens for on the go porn, 22" Stormers black and polished... as a matter of fact just about every box ticked.....if I`m going down I`m going down BIG time. ))
Ducati 1098S for the road and track and KTM 250EXC smoker for the mud.

I too had a similiar experience. The dealer replaced the lower end of my steering mechanism. The problem however remained and is primarily do to the tires (tyres for you guys) flat spotting. This is why it will go away when they reach normal operating temp. I have the same problem with my Mercedes.

DAVIS wrote:

....problem however remained and is primarily do to the tires (tyres for you guys) flat spotting. This is why it will go away when they reach normal operating temp...

Spot on Davis.....I have had everything done. Balanced numerous times including via Road Force Variation machine, had new steering rack and it still does it when the car has been left idle for a few days. Conti's are pretty soft and RRS is pretty heavy, so they flat spot pretty quickly. Once they are warm all is good again. RRS TDV6 Bluetooth, VR, Roof