Class 1 Touring Cars
Class 1 Touring Cars refers to two generations of prototype silhouette-style touring car regulations employed by the FIA.
First generation (1993–1996)
The first generation was a production-based formula introduced in 1993 along with Class 2 Touring Cars, the latter officially becoming known as Super Touring cars from 1995. Class 1 permitted more liberal modifications to the vehicles than those allowed for Class 2 cars.[1]
These Class 1 regulations restricted engines to a maximum of six cylinders, 2.5 litres capacity and four valves per cylinder.
Class 1 Touring Cars contested the
Only three manufacturers, Alfa Romeo, Mercedes-Benz and Opel, competed in Class 1 during the short history of the original category, with genuine works efforts (Audi and BMW had built cars based on the B4 80 Quattro and E36 M3 respectively for the class, but never raced them)[7] and the withdrawal of Alfa Romeo and Opel from the ITC at the end of 1996 effectively spelt the end of the class.[1]
Second generation (2019–present)
In early 2014, the DTM and the Japanese
Later in the same year however, the regulation changes were postponed to 2019 given DTM manufacturers' reluctance to potentially engage in more costly development.[11] Super GT would also delay the implementation of the regulations to 2020, as the final regulations were signed off in 2018.[12]
The second generation of Class 1 Touring Car is a purpose-built racer based on a two-door road-going model. The cars feature a two-litre turbocharged inline-four engine, capped at 650 hp and mounted in the front of the car. Push-to-pass and DRS are employed on the DTM vehicles (but not in Super GT), which benefit from 3.4t of downforce. All vehicles must be front-engine, rear-wheel drive.[13][14]
The first Class 1 cars debuted at the
Specifications
- Engine displacement: 2.0 DOHC inline-4
- Engine management: Bosch Motronic MS 7.4 (Deutsche Tourenwagen Masters since 2019 and Super GT GT500since 2020)
- Gearbox: 6-speed paddle shift gearbox (must have reverse)
- Weight:
- 1,070 kg (2,359 lb) including driver and fuel (Deutsche Tourenwagen Masters)
- 1,020 kg (2,249 lb) including driver and fuel (Super GT GT500)
- Power output:
- Deutsche Tourenwagen Masters:
- 2019: 610 + 30 kW) with push-to-pass
- 2020: 580 + 60 kW) with push-to-pass
- 2019: 610 + 30
- 550–650 kW) (Super GT GT500)
- Deutsche Tourenwagen Masters:
- Fuel:
- Aral Ultimate 102 unleaded (Deutsche Tourenwagen Masters)
- Various (Super GT GT500)
- Fuel capacity: 31.7 imperial gallons)
- Fuel delivery: Gasoline direct injection
- Fuel-mass flow restrictor rate: (Deutsche Tourenwagen Masters only)
- 2019: 95 + 5 kg/h (209 + 11 lb/h) with push-to-pass
- 2020: 90 + 10 kg/h (198 + 22 lb/h) with push-to-pass
- Fuel injection rail and injector pressure: Maximum 350 bar (5,076 psi)
- Aspiration: Single-turbocharged
- Turbocharger: Garrett 846519-15
- Turbo boost pressure: 3.5 bar (51 psi)
- Length: Not exceeding 5,000 mm (197 in) including rear wing
- Width: 1,950 mm (77 in)
- Wheelbase: 2,750 mm (108 in) restricted. Adjustable wheelbase banned
- Steering: Power-assisted rack and pinion
- Prohibitings: Traction control, active suspension and anti-lock braking systems
List of FIA Class 1 homologated touring cars
First generation (1993–1996)
Marque | Image | Model | N° | Engine | Start | End | First race | Last race | nb | cite |
---|---|---|---|---|---|---|---|---|---|---|
Alfa Romeo | 155 T.Spark 2.0 S 16V | 002 | Alfa Romeo Busso-based 2.5L V6 60° Alfa Romeo 690 |
2 April 1996 | 1 January 2004 | Zolder 1
|
Suzuka
|
^ | [19] | |
003 | 2 April 1996 | 1 January 2004 | Suzuka
|
[20] | ||||||
Mercedes-Benz | 190E | N/A | I4
|
N/A | N/A | Zolder 1
|
1994 DTM – Hockenheim 2 | |||
C220 D | 001 | Mercedes-Benz M106[21][22] 2.5L V6 90° | 2 April 1996 | 1 January 2005 | Zolder 1
|
Suzuka
|
[23] | |||
Opel | Calibra Color Edition | 004 | General Motors C25XE 2.5L V6 54° Cosworth KF (Isuzu 6VD1 derived)[24] 2.5L V6 75° |
2 April 1996 | 1 January 2005 | 1993 DTM – Hockenheim 2 | Suzuka
|
[25] |
Second generation (2019–2023)
Marque | Picture | Model | Engine | First race | Last race |
---|---|---|---|---|---|
Aston Martin | Vantage | HWA AFR Turbo 2.0 I-4t | Hockenheim 1
|
Hockenheim 2
| |
Audi | RS5 Turbo | Hockenheim 1
|
2020 DTM – Hockenheim 2 | ||
BMW | M4 Turbo
|
Hockenheim 1
|
2020 DTM – Hockenheim 2 | ||
Honda | NSX-GT | Honda HR-420E 2.0 I-4t | 2020 Super GT – Fuji 1 | Motegi
| |
Civic Type R-GT GT500 | 2024 Super GT – Okayama | ||||
Nissan | GT-R Nismo | 2020 Super GT – Fuji 1 | 2021 Super GT – Fuji 2 | ||
Z | 2022 Super GT – Okayama | ||||
Toyota
|
GR Supra | 2020 Super GT – Fuji 1 |
Notes
- 1.^
See also
- Super Touring – FIA Class 2 Touring Cars
- Deutsche Tourenwagen Meisterschaft – The German Touring Car Championship
- Deutsche Tourenwagen Masters
- Super GT
References
- ^ a b Alfa Romeo 155 DTM Retrieved from www.ultimatecarpage.com on 19 November 2009
- ^ a b c European Touring Car Championships, Automobile Year, 1995/96, page 206
- ^ European Touring Car Championships, Automobile Year, 1995/96, page 207
- ^ DTM History 1984–2008 Archived 2010-05-04 at the Wayback Machine Retrieved from www.dtm.com on 19 November 2009
- ^ 1995 ITCS schedule and standings Retrieved from www.motorsport-archive.com on 19 November 2009
- ^ 1996 ITCC schedule and standings Retrieved from www.motorsport-archive.com on 19 November 2009
- ^ Hundscheid, Marcel (2018-01-05). "The Glory Years of DTM Part 3: 1990 – 1993". Motorsport Retro. Retrieved 2021-03-22.
- ^ "Will the Class One series ever exist?". Car Throttle. 24 March 2016.
- ^ "DTM moves to turbo engines for 2017 as part of Super GT alignment". Autosport. 30 September 2014.
- ^ "Class One kommt ab 2017 (in German)". Auto Motor und Sport. 20 May 2015.
- ^ "Streit um neuen DTM-Turbomotor (in German)". Auto Motor und Sport. 29 September 2015.
- ^ "DTM and Super GT finalise 'Class 1' rules tie-up and joint races". Autosport. 23 June 2018.
- ^ "DTM, Super GT seal move to Class 1 regulations". Speedcafe. 24 June 2018.
- ^ "Class One: New Regulations To Combine DTM and Super GT". Winding Road. 2019-09-17.
- ^ "'Dream race' a success but no plans for any more joint races yet". Touring Car Times. 27 November 2019.
- ^ "R-Motorsport Aston Martin squad withdraws from DTM after one season". Autosport. 24 January 2020.
- ^ Klein, Jamie (27 April 2020). "Audi announces decision to quit DTM after 2020". motorsport.com. motorsport.com. Retrieved 27 April 2020.
- ^ "DTM to use spec GT3 cars for new era in 2021". Motorsport.com. 6 November 2020.
- ^ https://historicdb.fia.com/sites/default/files/car_attachment/1601077201/homologation_form_number_2_group_c_0.pdf
- ^ https://historicdb.fia.com/sites/default/files/car_attachment/1601074801/homologation_form_number_3_group_c_0.pdf
- ^ "Motor M 106 des Rennsport-Tourenwagens Mercedes-AMG C-Klasse, 1994" (in German). Daimler AG.
- ^ "90s Mercedes DTM Technology More Like F1". 8 September 2012. Retrieved 9 May 2022.
- ^ https://historicdb.fia.com/sites/default/files/car_attachment/1601080801/homologation_form_number_1_group_c_0.pdf
- ^ "25 Years Ago: Opel Wins World Touring Car Championship with Calibra". Opel Automobile GmbH.
- ^ https://historicdb.fia.com/sites/default/files/car_attachment/1601073601/homologation_form_number_4_group_c_0.pdf