Humming / Droning Sound Over 40 Mph

As closure, I replaced both front hubs yesterday with a FAG 713667060 wheel bearing kit. It was an easy job and took no more than a couple of hours to do both sides.

The OSF probably didn't need replacing, but not being 100% certain which side was at fault, it was the first one I replaced. When I came to the NSF hub, it was blindingly obvious those bearings were at fault, but only once I removed the wheel and spun the hub. This was further confirmed once the old hub was removed and the bearings were visibly 'bronzed', presumably from overheating.

Thank you for all of the excellent guidance, as usual!

As a tip for anyone reading this in the future, don't buy a 1/2" 46mm Milwaukee impact socket, it's marginally too big to fit into the hub.

Torque specs are:

46mm Collar Nut: 290 Nm
Brake Caliper Steering Nuckle: 110 Nm
Guide Bolts: 30 - 35 Nm
Brake Disc: 16 Nm
 
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