Tension of the spokes
A correctly tensioned wheel will offer a long service life without any problems.
Wheel manufacturers usually specify a maximum recommended spoke tension. Typically this could be 120 Kgf or 1200N.
If the tension has significant variations from one spoke to the next (on the rear wheels there is a difference between DS and NDS) the nipples can unscrew and the wheel will go visibly out of true, particularly with rim brake.
To avoid this, we make sure the tensions are even, by using a dedicated gauge and following the specifications indicated by the manufacturer; spoke tension is measured using Sapim, DT Swiss and Hozan tools.
We can also use a threadlock (Loctite) to prevent nipples from unscrewing.