Z4M - Steering wheel clunks turning right

[SCZ4]

I was driving at lunchtime and I noticed when turning right I'm now getting a vibration through the steering wheel. Was ok when I was drove it yesterday. It does it when moving and when stationary. Nothing at all turning the wheel left. Don't really feel it above 40mph or so.

What I have noticed is the clunk\creak\vibration only happens when the bottom of the steering wheel passes the 11 O'clock position when turning left (clockwise). Very odd.

Had the front wheels off tonight, can't see anything wrong. Re-torqued all the suspension bolts and nuts, all ok. No play when holding the wheel when the car is jacked up.

It's not the strut braces like my searches suggested.

Any ideas?

Graeme