Geoff Brabham (GTP)
Tomás López (Lights)
Dorsey Schroeder (GTO)
Lance Stewart (GTU)
Mistrz producentów
Nissan (GTP)
Buick (Lights)
Mercury (GTO)
Mazda (GTU)
| Runda | Tor | Data | Klasa | Kierowca | Pojazd | Zespół |
|---|---|---|---|---|---|---|
| 1 | Daytona Daytona 24 godziny | 1990.02.03 - 02.04 | GTP | Jaguar XJR-12 |  Castrol Jaguar | |
| Lights | Argo JM16 - Mazda | Erie Scientific Racing | ||||
| GTO | Lincoln Mercury Cougar XR-7 - Ford | Tru-Cur Roush | ||||
| GTU | Mazda RX-7 | Peter Uria Racing | ||||
| 2 | Miami | 1990.02.25 | GTP | Nissan GTP ZX-T | Nissan Performance | |
| Lights | Spice SE90P - Buick | Spice Engineering | ||||
| 3 | Miami | 1990.02.25 | GTO | Nissan 300ZX Turbo | Cunningham Racing | |
| GTU | Nissan 240SX | Leitzinger Racing | ||||
| 4 | Sebring Sebring 12 godzin | 1990.03.17 | GTP | Nissan GTP ZX-T | Nissan Performance | |
| Lights | Spice SE89P - Buick | Essex Racing | ||||
| GTO | Lincoln Mercury Cougar XR-7 - Ford | Roush Racing | ||||
| GTU | Nissan 240SX | Leitzinger Racing | ||||
| 5 | Road Atlanta | 1990.04.01 | GTP | Nissan GTP ZX-T | Nissan Performance | |
| Lights | Spice SE90P - Buick | Spice Engineering | ||||
| 6 | Long Beach | 1990.04.21 | GTO | Lincoln Mercury Cougar XR-7 - Ford | Whistler Radar | |
| GTU | Mazda MX-6 | Mazda Motorsports | ||||
| 7 | West Palm Beach | 1990.04.22 | GTP | Nissan GTP ZX-T | Nissan Performance | |
| Lights | Spice SE90P - Buick | Spice Engineering | ||||
| 8 | Heartland Park | 1990.05.05 | GTO | Mazda RX-7 | Mazda | |
| GTU | Mazda MX-6 | Mazda Motorsports | ||||
| 9 | Heartland Park | 1990.05.06 | GTP | Eagle HF89 - Toyota | All American Racers | |
| Lights | Spice SE88P - Buick | S & L Racing | ||||
| 10 | Lime Rock Park | 1990.05.28 | GTP | Jaguar XJR-10 | Castrol Jaguar | |
| Lights | Spice SE89P - Ferrari |  Brieri Racing | ||||
| 11 | Mid-Ohio | 1990.06.03 | GTP | Nissan NPT 90 | Nissan Performance | |
| Lights | Spice SE90P - Buick | Spice Engineering | ||||
| 12 | Mid-Ohio | 1990.06.03 | GTO | Mazda RX-7 | Mazda | |
| GTU | Dodge Daytona | Full Time Racing | ||||
| 13 | Mosport Park | 1990.06.24 | GTO | Nissan 300ZX | Cunningham Racing | |
| GTU | Dodge Daytona | Full Time Racing | ||||
| 14 | Watkins Glen | 1990.07.01 | GTP | Nissan NPT 90 | Nissan Performance | |
| Lights | Spice SE89P - Oldsmobile | Brieri Racing | ||||
| 15 | Meadowlands | 1990.07.14 | GTO | Lincoln Mercury Cougar XR-7 - Ford | Whistler Radar | |
| GTU | Nissan 240SX | Leitzinger Racing | ||||
| 16 | Sears Point | 1990.07.15 | GTP | Eagle HF89 - Toyota | All American Racers | |
| Lights | Spice SE90P - Buick | Spice Engineering | ||||
| 17 | Portland | 1990.07.29 | GTP | Jaguar XJR-10 | Castrol Jaguar | |
| Lights | Spice SE90P - Buick | Spice Engineering | ||||
| 18 | Portland | 1990.07.29 | GTO | Lincoln Mercury Cougar XR-7 - Ford | Whistler Radar | |
| GTU | Mazda MX-6 | Mazda Motorsports | ||||
| 19 | Road America | 1990.08.19 | GTO | Nissan 300ZX | Cunningham Racing | |
| GTU | Mazda MX-6 | Mazda Motorsports | ||||
| 20 | Road America | 1990.08.19 | GTP | Nissan NPT 90 | Nissan Performance | |
| Lights | Spice SE89P - Ferrari | Brieri Racing | ||||
| 21 | San Antonio | 1990.09.02 | GTP | Eagle HF89 - Toyota | All American Racers | |
| Lights | Spice SE90P - Buick | Spice Engineering | ||||
| 22 | San Antonio | 1990.09.02 | GTO | Mazda RX-7 | Mazda Motorsports | |
| GTU | Nissan 240SX | Leitzinger Racing | ||||
| 23 | Watkins Glen | 1990.09.23 | GTO | Lincoln Mercury Cougar XR-7 - Ford | Whistler Radar | |
| GTU | Mazda MX-6 | Mazda Motorsports | ||||
| 24 | Lime Rock Park | 1990.09.29 | GTO | Lincoln Mercury Cougar XR-7 - Ford | Whistler Radar | |
| GTU | Dodge Daytona | Full Time Racing | ||||
| 25 | Florida | 1990.09.30 | GTP | Porsche 962C | Dyson Racing | |
| Lights | Spice SE90P - Ferrari | David Tennyson | ||||
| 26 | Del Mar | 1990.11.10 | GTO | Lincoln Mercury Cougar XR-7 - Ford | Whistler Radar | |
| GTU | Dodge Daytona | Full Time Racing | ||||
| 27 | Del Mar | 1990.11.11 | GTP | Eagle HF89 - Toyota | All American Racers | |
| Lights | Spice SE90P - Pontiac | Comptech Racing |
