I think they all do that Sir.
No .............. as verboten1 suggests, it's probably just worn tyres. OK, check out the wheel bearings for good measure - it's simple enough. Otherwise, just get the bike on it's stand, weight up the rear, to get the front wheel off the ground, then run your hand around the tread - I suspect you will find some uneven wear starting to show, which makes the tyre 'sing' a little when cornering. Then, back on the ground, just to make sure the damping is effective give the bike a good bounce at the front & check that it settles immediately. Undamped travel, say due to a leaky fork seal, can cup front tyres pretty quickly.
Once checked, personally, I wouldn't worry too much, unless it is making the handling unpredictable.
Ride Safe ............ KEN