Trying to locate a fault...

[Fetchez la vache]

Fitted some new tyres on the full-suss MTB last week which are a slightly larger diameter than the old ones - nothing major, and still plenty of clearance.
Noticed that occasionally the rear was making a noise that immediately sounded like the tyres were rubbing on the frame.

However.
a) The tyres are muddy, and there was nowhere on the tyre that was free of mud / indicated that the tyre had been rubbing anywhere.
b) There was no relation to the noise happenning when the suspension was compressed - which I'm assuming would be the most likely time for the tyres to be rubbing.
c) The noise only occurs when I am freewheeling and stops when pedalling. For instance I was able to get the noise relatively easily when freewheeling on the road back to the pub - i.e. suspension not in compression at all.

Does this sound like a hub issue? Never had an assue with any hibs to know how it manifests..