Bieber, 19, was recently arrested for allegedly driving under the influence of drugs and alcohol, drag racing and resisting arrest. He is also under investigation for vandalizing a neighbor's home.
"Things don't really change much, do they?" Gibb, 67, said on Thursday's edition of the "Today" show when asked about Bieber's recent spate of bad behavior.
"If you're a teenage idol and all the young girls love you, you can lose that pretty quick. You can lose perspective, but you can also lose them in the long run if you're not a role model," Gibb said.
"Hopefully, what he does on stage and the way he dances and the way he sings, he will apply that to his real life. There's a discipline in what he's doing. Apply that discipline to how you want to behave."
Best known as a member of the fraternal pop group the Bee Gees, Gibb is to kick off his solo concert tour, "Mythology," in Boston May 15, NBC said.