Taiman Blues: Ladies-hen - Mayumi

Fifteen-year-old Mayumi has to move to the rough end of Osaka when her parents split and remarry. She meets Noriko, who helps her settle into her new life. Through Noriko's job at a petrol station, they got to know Big Bear and his biker gang, and eventually get into their own gang of girls racers.
(Source: The Anime Encyclopedia)