Some tyres can be very noisy, I had some 17" Avons on a car once and even replaced both rear wheel bearings as was sure they were both noisy.. it was the tyres!

If you can get car jacked up and safe enough to run the front wheels (turn off ESP), should feel a vibration through the saddle clamp on the bearing, listen to it through a solid bar. (socket extension/whatever)

Check the other tyres for 'stepping' (uneven tread) too.