Finished bleeding my rear brakes after new bearings, discs, pads, pipes, calipers. When I took off the front-right wheel alloy middle cap, I noticed that the bearing cap wasn't intact, and there was no grease in the bearing. I was speechless.
Anyway, I expect this could account for the grinding noise at speed (around 70mph). Is it an MOT failure? When the car failed, it wasn't mentioned but perhaps he missed it. What are the consequences of not sorting it, apart from the noise? I take it that the bearing wears more, but what does that actually mean in practice?
I can't believe that a PO forgot to put the cap on.