Slow speed rubbing noise - similar to disc but not

[chandra]

Hi

Before I take it in for further diagnosis. My 2.0 C30 petrol 2012 is making a slight rubbing noise from front drivers wheel area.

It is rotational noise and increases with speed. It does not go away with brakes applied and also exists when coasting in neutral (new Bosch discs and pads last summer)

Checked for debris with disc and back plate and seems fine. The tyre could possibly be making the noise, but have my doubts as I can't imaging how it could make a kinda fff.......fff.......fff........fff........fff..... ..fff........fff sound.

The car at speed is fine and no bearing failure noise when turning and no constant wirring hum.

Could be a drive shaft issue I suppose but maybe that would make noise at speed as well.

I could take caliper and disc off to check for deep debris that might be rubbing. But otherwise it's beyond me.

Any ideas?

Many thanks