If you're looking for manga similar to Circuit no Ookami, you might like these titles.
For Tetsuya, being in a gang is his identity. Being an Osaka boy, he speaks his mind and oftentimes, it gets him into trouble. After dropping out of school without a job in sight, he spends his days screwing around and doing as he pleases. Several sequences of events leads Tetsuya deeper into the culture and the more he sinks in, the harder it will be to get out alive.
Arata, Chinta and Buuyan found an old used car in the dump. They tried to fix it, but it exploded. They decide to try fixing another car, which is an Eunos Roadster. They need 10 years to get it finished and by then they their dream is not so simple anymore...
It follows the adventures of a boy named Yonkuro Hinomaru as he races Mini-4WD cars.
Akaba Ken is a top-rank stock-car driver who was involved in a horrific accident, which killed 6 spectators. He was badly hurt, but he survived and promised his younger sister that he would give up racing. He goes to America to help his father develop a new Formula 1 racer, but in the testing of the car runs at speeds that set records – so the pressure is on for him to return to racing, this time in the F-1 circuit. He has supporters, but there are also those who don’t want him to come back, including those who caused the original crash…