The 20-year-old pop singer's lawyers filed a motion Monday saying they need more time to prepare their case. Bieber's trial is set for May 5 in Miami.
The motion says prosecutors do not oppose a delay. A scheduling hearing is set for Wednesday.
Bieber was arrested Jan. 23 in Miami Beach after what police described as an illegal street drag race. He wasn't charged with drag racing.
Alcohol breath tests found Bieber's level below the 0.02 limit for underage drivers. Urine tests showed the presence of marijuana and an anti-anxiety drug in his system.
