# 2015 F4 Japanese Championship

The 2015 F4 Japanese Championship was the inaugural season of the F4 Japanese Championship. It began on 4 April in Okayama and finished on 15 November on Twin Ring Motegi after seven double header rounds.

## Teams and drivers

| Team | No. | Driver | Rounds |
| Hanashima Racing | 2 | Katsuaki Kubota | 1–2, 7 |
| Hanashima Racing | 2 | Shuma Sato | 3–5 |
| Sutekina Racing Team | 3 | Takahiro Ban | 1 |
| Sutekina Racing Team | 3 | Miku Ikejima | 2–3 |
| Sutekina Racing Team | 3 | Sena Sakaguchi | 4–7 |
| RS Fine | 4 | Shunsuke Kohno | All |
| RS Fine | 5 | Yuya Hiraki | All |
| Clear Corporation | 6 | Masanori Yonekura | 1, 3–4, 6 |
| Honda Formula Dream Project | 7 | Hiroki Otsu | All |
| Honda Formula Dream Project | 8 | Yuta Kamimura | All |
| Honda Formula Dream Project | 9 | Mizuki Ishizaka | All |
| Honda Formula Dream Project | 10 | Katsuhide Kaneishi | All |
| Rn-sports | 11 | Tadasuke Makino | All |
| Rn-sports | 57 | Nobuhiro Yoshida | 6 |
| Team A-ONE with SECNA | 12 | Yuki Shiraishi | 1–4, 6 |
| KCMG | 14 | Yuki Nemoto | All |
| KCMG | 18 | James Munro | 1–2 |
| KCMG | 18 | Paul Ip | 3 |
| Media Do Kageyama Racing | 16 | Tsubasa Mekaru | 1–5 |
| ARN Racing | 17 | Hiroaki Nagai | 5–7 |
| VSR Lamborghini S.C.Formula Jr | 19 | Takuro Shinohara | All |
| VSR Lamborghini S.C.Formula Jr | 63 | Nicolas Costa | 1–4 |
| VSR Lamborghini S.C.Formula Jr | 63 | Gustavo Myasava | 5–7 |
| miNami aoYama with SARD | 20 | Kotoka Goibuchi | 2, 4 |
| miNami aoYama with SARD | 20 | Ayaka Imahashi | 3, 5 |
| miNami aoYama with SARD | 20 | Miki Koyama | 6–7 |
| miNami aoYama with SARD | 28 | Yoshiaki Katayama | 1–2 |
| miNami aoYama with SARD | 39 | Junpei Kato | All |
| RSS | 21 | Turbo Asahi | 3–4, 7 |
| RSS | 22 | Ritomo Miyata | 5–7 |
| N-SPEED | 23 | Yugo Tanabe | All |
| Mars Racing Factory | 24 | Hideki Nakahara | 7 |
| Field Motorsport | 25 | Tomoki Takahashi | 2–4, 7 |
| Field Motorsport | 55 | Takashi Hata | 1–2, 4, 6–7 |
| Field Motorsport | 75 | Yuya Tezuka | All |
| Zap Speed Racing Team | 27 | Hwang Do-yun | 1–4, 7 |
| Shunsuke Sato | 32 | Shunsuke Sato | 4 |
| Sfida Racing Team | 34 | "Flying Rat" | 2–4 |
| Sfida Racing Team | 35 | "Motor Mouse" | 2–4 |
| TOM'S Spirit | 36 | Sho Tsuboi | All |
| TOM'S Spirit | 37 | Kazuto Kotaka | 2–7 |
| Garage Chabatake | 38 | Ryo Yamada | 1–3 |
| Garage Chabatake | 38 | Tsuyoshi Tajima | 5, 7 |
| Buzz International | 44 | View Yamauchi | All |
| Buzz International | 45 | Yosuke Yamazaki | 7 |
| B-MAX Racing Team | 50 | Shinnosuke Yamada | All |
| B-MAX Racing Team | 51 | Yuichi Mikasa | All |
| Saitama Toyopet GreenBrave | 52 | Taku Bamba | 1–3, 5–7 |
| Le Beausset Motorsports | 62 | Noa Satomi | All |
| Skill Speed | 66 | Riku Hashimoto | All |
| leprix sport | 70 | Tsubasa Amano | 2–7 |
| NRS | 80 | Yudai Jinkawa | 1 |
| NRS | 80 | Satoshi Kosugi | 2 |
| NRS | 81 | Musashi Nakanishi | 2–3 |
| NRS | 81 | Yuichi Sasaki | 7 |
| Succeed Sports | 88 | Shintaro Kawabata | All |
| Succeed Sports | 89 | Takahiro Ban | 3–5 |
| Succeed Sports | 89 | Ryota Kiyohara | 6–7 |

## Race calendar and results

The calendar was published on 19 January 2015. All rounds were held in Japan and were part of the Super GT events.
| Round | Round | Circuit | Date | Pole Position | Fastest Lap | Winning driver | Winning team |
| 1 | R1 | Okayama International Circuit, Mimasaka | 4 April | Sho Tsuboi | Tadasuke Makino | Tadasuke Makino | Rn-sports |
| 1 | R2 | Okayama International Circuit, Mimasaka | 5 April | Tsubasa Mekaru | Tadasuke Makino | Tadasuke Makino | Rn-sports |
| 2 | R1 | Fuji Speedway, Oyama | 2 May | Tadasuke Makino | Sho Tsuboi | Sho Tsuboi | TOM'S Spirit |
| 2 | R2 | Fuji Speedway, Oyama | 3 May | Tadasuke Makino | Sho Tsuboi | Tadasuke Makino | Rn-sports |
| 3 | R1 | Fuji Speedway, Oyama | 8 August | Katsuhide Kaneishi | Yuya Hiraki | Tadasuke Makino | Rn-sports |
| 3 | R2 | Fuji Speedway, Oyama | 9 August | Katsuhide Kaneishi | Yuya Hiraki | Sho Tsuboi | TOM'S Spirit |
| 4 | R1 | Suzuka Circuit, Suzuka | 29 August | Sho Tsuboi | Yuya Hiraki | Sho Tsuboi | TOM'S Spirit |
| 4 | R2 | Suzuka Circuit, Suzuka | 30 August | Tadasuke Makino | Tadasuke Makino | Sho Tsuboi | TOM'S Spirit |
| 5 | R1 | Sportsland SUGO, Murata | 19 September | Sho Tsuboi | Shunsuke Kohno | Sho Tsuboi | TOM'S Spirit |
| 5 | R2 | Sportsland SUGO, Murata | 20 September | Sho Tsuboi | Sena Sakaguchi | Sho Tsuboi | TOM'S Spirit |
| 6 | R1 | Autopolis, Hita | 31 October | Hiroki Otsu | Sho Tsuboi | Sho Tsuboi | TOM'S Spirit |
| 6 | R2 | Autopolis, Hita | 1 November | Yuya Hiraki | Kazuto Kotaka | Shinnosuke Yamada | B-MAX Racing Team |
| 7 | R1 | Twin Ring Motegi, Motegi | 14 November | Yuki Nemoto | Yuta Kamimura | Tadasuke Makino | Rn-sports |
| 7 | R2 | Twin Ring Motegi, Motegi | 15 November | Tadasuke Makino | Sho Tsuboi | Tadasuke Makino | Rn-sports |

## Championship standings
### Drivers' Championships

* Only the best eleven results counted towards the championship. Points were awarded as follows:
| Position | 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th | 9th | 10th |
| Points | 20 | 15 | 12 | 10 | 8 | 6 | 4 | 3 | 2 | 1 |

#### Overall

| Pos | Driver | OKA | OKA | FUJ1 | FUJ1 | FUJ2 | FUJ2 | SUZ | SUZ | SUG | SUG | AUT | AUT | MOT | MOT | Points |
| 1 | Sho Tsuboi | 2 | 2 | 1 | 9 | 4 | 1 | 1 | 1 | 1 | 1 | 1 | 17 | 5 | 2 | 195 |
| 2 | Tadasuke Makino | 1 | 1 | 2 | 1 | 1 | 26 | 2 | 2 | 2 | 3 | 9 | 5 | 1 | 1 | 192 |
| 3 | Hiroki Otsu | 9 | 3 | 4 | 11 | 2 | 4 | 4 | 17 | 5 | 7 | 2 | 2 | 3 | 24 | 108 |
| 4 | Shinnosuke Yamada | Ret | Ret | 3 | 3 | 7 | 6 | 7 | 7 | 10 | Ret | 3 | 1 | 6 | 8 | 84 |
| 5 | Yuya Hiraki | 3 | 7 | 6 | Ret | 3 | 2 | 3 | 3 | 12 | 13 | 4 | 20 | Ret | 13 | 83 |
| 6 | Kazuto Kotaka | | | 10 | 13 | 6 | 5 | 6 | 4 | 6 | 7 | 8 | 6 | 16 | 11 | 50 |
| 7 | Yuki Nemoto | Ret | 10 | 8 | 7 | 12 | Ret | 10 | 5 | 15 | 14 | 14 | 8 | 2 | 3 | 47 |
| 8 | Shunsuke Kohno | 10 | 20 | 17 | 21 | 17 | 18 | 9 | 9 | 3 | 2 | 10 | 10 | 9 | 6 | 42 |
| 9 | Mizuki Ishizaka | DNS | 16 | 13 | 5 | 5 | Ret | 5 | 14 | 20 | 16 | 6 | 4 | 11 | 9 | 42 |
| 10 | Sena Sakaguchi | | | | | | | 30† | 6 | 7 | 8 | 5 | 7 | 3 | 7 | 41 |
| 11 | Takuro Shinohara | 17 | 18 | Ret | 4 | 18 | 8 | 18 | 8 | 9 | 4 | 7 | 9 | 10 | 22 | 35 |
| 12 | Yuta Kamimura | Ret | 5 | 11 | 15 | Ret | 12 | 8 | 10 | 8 | 6 | 16 | 15 | 7 | 4 | 35 |
| 13 | Shintaro Kawabata | 15 | Ret | 5 | 10 | 11 | 13 | 28 | 11 | 14 | 11 | 15 | 11 | 4 | 5 | 27 |
| 14 | Yuichi Mikasa | 5 | Ret | Ret | 2 | Ret | 9 | 22 | 18 | 13 | 12 | 21 | 16 | Ret | 17 | 25 |
| 15 | Ritomo Miyata | | | | | | | | | 4 | 9 | Ret | 3 | 14 | 27 | 24 |
| 16 | Katsuhide Kaneishi | 19 | 9 | 21 | 28 | Ret | 3 | 16 | 19 | 21 | 22 | 27 | 13 | 15 | 12 | 14 |
| 17 | Tsubasa Mekaru | 6 | Ret | 7 | 32† | 8 | 25 | 12 | 13 | 16 | 15 | | | | | 13 |
| 18 | Nicolas Costa | 4 | 15 | 12 | 14 | DNS | 16 | 13 | 24 | | | | | | | 10 |
| 19 | James Munro | Ret | 4 | 16 | Ret | | | | | | | | | | | 10 |
| 20 | Yuki Shiraishi | 7 | 6 | 18 | 16 | 16 | 24 | 15 | 15 | | | 12 | Ret | | | 10 |
| 21 | Musashi Nakanishi | | | 33† | 6 | 21 | 23 | | | | | | | | | 6 |
| 22 | Turbo Asahi | | | | | 10 | 7 | 20 | 30 | | | | | 23 | 23 | 5 |
| 23 | Noa Satomi | 20 | 8 | Ret | 20 | 19 | 31 | 17 | 16 | 17 | Ret | 11 | 12 | 12 | Ret | 3 |
| 24 | Riku Hashimoto | 11 | 17 | 19 | 8 | 24 | Ret | 19 | 20 | 27 | 21 | 24 | 23 | 15 | Ret | 3 |
| 25 | Ryo Yamada | 8 | 12 | 15 | Ret | 20 | 19 | | | | | | | | | 3 |
| 26 | Taku Bamba | WD | WD | 9 | 12 | 14 | 15 | | | 18 | 17 | 13 | 21 | Ret | 10 | 3 |
| 27 | Tsubasa Amano | | | 22 | 19 | 9 | 11 | Ret | 12 | Ret | 19 | 18 | 14 | 17 | 14 | 2 |
| 28 | Shuma Sato | | | | | 13 | 14 | 31† | 22 | 11 | 10 | | | | | 1 |
| 29 | Junpei Kato | 13 | 19 | 14 | 24 | 15 | 10 | 14 | DNS | 26 | 23 | 19 | 27 | Ret | 25 | 1 |
| 30 | Takahiro Ban | 18 | 11 | | | 26 | 20 | 32† | 23 | 23 | 26 | | | | | 0 |
| 31 | Tomoki Takahashi | | | 31 | 18 | Ret | 21 | 11 | 26 | | | | | WD | WD | 0 |
| 32 | Masanori Yonekura | 12 | 23† | | | WD | WD | 24 | 25 | | | 26 | 24 | | | 0 |
| 33 | View Yamauchi | WD | WD | 20 | 25 | 22 | 17 | Ret | 31 | 24 | 24 | 25 | 22 | 13 | 21 | 0 |
| 34 | Yoshiaki Katayama | 21 | 13 | DNS | Ret | | | | | | | | | | | 0 |
| 35 | Yuya Tezuka | 22 | 14 | 23 | 17 | 23 | 22 | 21 | 27 | 22 | 20 | 17 | 18 | 19 | Ret | 0 |
| 36 | Katsuaki Kubota | 14 | 22 | 26 | 31 | | | | | | | | | Ret | Ret | 0 |
| 37 | Hwang Do-yun | WD | WD | 25 | Ret | Ret | 33 | 23 | 21 | | | | | 25 | 16 | 0 |
| 38 | Yugo Tanabe | 16 | 24 | 32 | 29 | Ret | 32 | 29 | 33 | 30 | 29 | 30 | 28 | 28 | 32 | 0 |
| 39 | Gustavo Myasava | | | | | | | | | 19 | 38 | 23 | Ret | Ret | 18 | 0 |
| 40 | Yosuke Yamazaki | | | | | | | | | | | | | 18 | Ret | 0 |
| 41 | Hiroaki Nagai | | | | | | | | | 25 | 25 | 29 | 29† | 21 | 19 | 0 |
| 42 | Nobuhiro Yoshida | | | | | | | | | | | 22 | 19 | | | 0 |
| 43 | Ryota Kiyohara | | | | | | | | | | | 20 | Ret | Ret | 20 | 0 |
| 44 | Takashi Hata | Ret | 21 | 28 | Ret | | | 25 | 29 | | | Ret | 25 | 20 | 30 | 0 |
| 45 | Satoshi Kosugi | | | 24 | 22 | | | | | | | | | | | 0 |
| 46 | Tsuyoshi Tajima | | | | | | | | | 29 | 28 | | | 22 | 31 | 0 |
| 47 | Kotoka Goibuchi | | | 27 | 23 | | | 27 | DNS | | | | | | | 0 |
| 48 | Yuichi Sasaki | | | | | | | | | | | | | 24 | 29 | 0 |
| 49 | Ayaka Imahashi | | | | | 25 | 28 | | | | | | | | | 0 |
| 50 | Miki Koyama | | | | | | | | | | | 28 | 26 | 26 | 26 | 0 |
| 51 | "Motor Mouse" | | | 29 | 26 | 27 | 27 | WD | WD | | | | | | | 0 |
| 52 | "Flying Rat" | | | 30 | 27 | 28 | 30 | 26 | 32 | | | | | | | 0 |
| 53 | Hideki Nakahara | | | | | | | | | | | | | 27 | 28 | 0 |
| 54 | Shunsuke Sato | | | | | | | Ret | 28 | | | | | | | 0 |
| 55 | Miku Ikejima | | | Ret | 30 | Ret | 29 | | | | | | | | | 0 |
| | Yudai Jinkawa | WD | WD | | | | | | | | | | | | | 0 |
| | Paul Ip | | | | | WD | WD | | | | | | | | | 0 |
| Pos | Driver | OKA | OKA | FUJ1 | FUJ1 | FUJ2 | FUJ2 | SUZ | SUZ | SUG | SUG | AUT | AUT | MOT | MOT | Points |
| Colour | Result |
| Gold | Winner |
| Silver | Second place |
| Bronze | Third place |
| Green | Points finish |
| Blue | Non-points finish |
| Blue | Non-classified finish (NC) |
| Purple | Retired (Ret) |
| Red | Did not qualify (DNQ) |
| Red | Did not pre-qualify (DNPQ) |
| Black | Disqualified (DSQ) |
| White | Did not start (DNS) |
| White | Withdrew (WD) |
| White | Race cancelled (C) |
| Blank | Did not practice (DNP) |
| Blank | Did not arrive (DNA) |
| Blank | Excluded (EX) |

### Teams' standings

| Pos | Team | Pts. |
| 1 | TOM'S Spirit | 225 |
| 2 | Rn-sports | 216 |
| 3 | Honda Formula Dream Project | 144 |
| 4 | RS Fine | 133 |
| 5 | B-Max Racing Team | 109 |
| 6 | KCMG | 70 |
| 7 | VSR Lamborghini S.C.Formula Jr | 59 |
| 8 | Sutekina Racing Team | 55 |
| 9 | Succeed Sports | 41 |
| 10 | RSS | 39 |
| 11 | Media Do Kageyama Racing | 23 |
| 12 | Eagle Sport | 20 |
| 13 | Le Beausset Motorsports | 17 |
| 14 | Skill Speed | 17 |
| 15 | miNami aoYama with SARD | 14 |
| 16 | N-Speed | 14 |
| 17 | Field Motorsport | 14 |
| 18 | Leprix Sport | 14 |
| 19 | Garage Chabatake | 13 |
| 20 | Hanamashima Racing | 13 |
| 21 | Saitama Toyopet GreenBrave | 13 |
| 22 | NRS | 10 |
| 23 | Buzz International | 10 |
| 24 | Zap Speed Racing Team | 8 |
| 25 | Sfida Racing Team | 6 |
| 26 | Clear Corporation | 6 |
| 27 | ARN Racing | 6 |