reliability

[christover1]

I doubt its diff related.
Is it under acceleration, coasting, or decelerating.?
uni joints can do that.
wheel bearings, brakes.
Auto lockers do it, but I think you have air locker?
All noises sound worse before trips.

[jonfromhamilton]

possibly uni joint yeah. but i don't think it is brakes or something minor, it really feels like its big bits of steel letting go.
got a spare uni in the car anyway