Often it starts unremarked with the breakage of one spoke.
You don't remark it, You don't hear ist.
After a certain time the spokes in der neighborhoud will break.
The friend's rear tire began to grind at the swingarm.
The wheel became out of round.
So strong that the tire just braked.
So he could not drive this bike.
By chance some weeks ago, I saw that two spokes in the rear wheel were broken on my motorcycle with side car.
The spokes in their neighborhood sound dull because they were loose.
The wheel became out of round about circa 10 mm..
On a bike with sidecar You don't remarke in a sudden.
Good tensioned spokes have a bright sound.
Bad tensioned spokes have a dull sound.
Each spoke has to have the same bright sound.
"Soundtester" ;-)) is -for example- a spanner.
When spokes on the cross touch each other it's wrong. It will have a dull sound because they are bent.