He is a graduate of the Nissan Driver Development Program (NDDP), and a past champion of the Bathurst 12 Hour race, and the GT World Challenge Europe Endurance Cup.
Chiyo began racing cars in 2007, competing in the Formula Challenge Japan (FCJ) series after earning a scholarship from the NDDP.
[1] After missing the 2014 season due to his new commitments in Europe, Chiyo returned to Super GT in 2015, this time with Gainer in their new Nissan GT-R alongside André Couto.
[5] Then in the Suzuka 1000km, Chiyo, Couto, and third driver Ryuichiro Tomita won the GT300 class, despite carrying 88 kilogrammes of Success Ballast.
[6] Chiyo finished the season second in the championship, despite missing two races due to his ongoing commitments in the GT World Challenge Europe Endurance Cup.
His performances in Japan and Europe secured a promotion to the GT500 class for the 2016 season, joining three-time GT500 champion Satoshi Motoyama at MOLA.
Chiyo suffered a spinal injury after a crash in the summer race at Fuji,[7] which forced him to miss over a month of competition including the Suzuka 1000km.
He finished the season twelfth in the standings in 2016, and again in 2017, where Chiyo nearly took his first premier class victory at Sugo after a last-lap battle between Motoyama and Kohei Hirate.
Instead, he was appointed reserve driver for the GT500 class, and in addition to providing commentary on television programs, he accompanied the team to all rounds that did not clash with the Intercontinental GT Challenge schedule.
The trio won the 1000 km Paul Ricard and finished third in the final race of the series at the Nürburgring, taking the title by three points over the Bentley M-Sport entry of Steven Kane, Andy Meyrick and Guy Smith.
Chiyo was set to debut the 2020 Bathurst 12 Hour with Burdon and Matsuda but withdrew the race after he crashed in the first practice which caused major damage to the Nissan GT-R Nismo GT3.
Chiyo competed for one season in the Japanese Super Formula Championship, driving for B-Max Racing Team in 2018.