1990 IMSA GT Championship

Schedule

The GT and Prototype classes did not participate in all events, nor did they race together at shorter events. The AAC class only participated in GT-only events. Races marked with All had all classes on track at the same time.

Season results

Rnd	Circuit	GTP Winning Team	Lights Winning Team	GTO Winning Team	GTU Winning Team	Results
		GTP Winning Drivers	Lights Winning Drivers	GTO Winning Drivers	GTU Winning Drivers
1	Daytona	#61 Castrol Jaguar	#36 Erie Scientific Racing	Tru-Cur Roush	#71 Peter Uria Racing	Results
		Davy Jones Andy Wallace Jan Lammers	John Grooms Frank Jellinek Michael Greenfield	Robby Gordon Calvin Fish Lyn St. James	Peter Uria Bob Dotson Jim Pace Rusty Scott
2	Miami	#83 Nissan Performance	#32 Spice Engineering	#75 Cunningham Racing	#96 Leitzinger Racing	Results
		Geoff Brabham Chip Robinson Bob Earl	Tomas Lopez Fermín Vélez	Steve Millen	David Loring
3	Sebring	#83 Nissan Performance	#8 Essex Racing	Roush Racing	#95 Leitzinger Racing	Results
		Derek Daly Bob Earl	Tom Hessert Charles Morgan	Robby Gordon Calvin Fish Lyn St. James	Butch Leitzinger Chuck Kurtz David Loring
4	Road Atlanta	#83 Nissan Performance	#32 Spice Engineering	Did Not Participate	Did Not Participate	Results
		Geoff Brabham Derek Daly	Tomás López Fermín Vélez
5	Long Beach	Did Not Participate	Did Not Participate	#6 Whistler Radar	#38 Mazda Motorsports	Results
				Dorsey Schroeder	John Finger
6	Palm Beach	#83 Nissan Performance	#32 Spice Engineering	Did Not Participate	Did Not Participate	Results
		Geoff Brabham Derek Daly	Tomás López Fermín Vélez
7	Heartland	#99 All American Racers	#4 S & L Racing	#1 Mazda	#37 Mazda Motorsports	Results
		Juan Manuel Fangio II	Scott Schubot Linda Ludemann	Pete Halsmer	Lance Stewart
8	Lime Rock	#61 Castrol Jaguar	#80 Brieri Racing	Did Not Participate	Did Not Participate	Results
		Price Cobb John Nielsen	Martino Finotto Ruggero Melgrati
9	Mid-Ohio	#83 Nissan Performance	#32 Spice Engineering	#1 Mazda	#07 Full Time Racing	Results
		Geoff Brabham Derek Daly	Perry McCarthy Tomás López	Pete Halsmer	Stu Hayner
10	Mosport	Did Not Participate	Did Not Participate	#75 Cunningham Racing	#00 Full Time Racing	Results
				Steve Millen	Don Knowles
11	Watkins Glen	#84 Nissan Performance	#80 Brieri Racing	Did Not Participate	Did Not Participate	Results
		Bob Earl Chip Robinson	Martino Finotto Ruggero Melgrati
12	Meadowlands	Did Not Participate	Did Not Participate	#9 Whistler Radar	#96 Leitzinger Racing	Results
				Robby Gordon	David Loring
13	Sears Point	#99 All American Racers	#32 Spice Engineering	Did Not Participate	Did Not Participate	Results
		Juan Manuel Fangio II	Dan Marvin Tomás López
14	Portland	#60 Castrol Jaguar	#32 Spice Engineering	#6 Whistler Radar	#37 Mazda Motorsports	Results
		Davy Jones	Parker Johnstone Tomás López	Dorsey Schroeder	Lance Stewart
15	Road America	#83 Nissan Performance	#80 Brieri Racing	#75 Cunningham Racing	#37 Mazda Motorsports	Results
		Geoff Brabham	Martino Finotto Ruggero Melgrati	Steve Millen	Lance Stewart
16	San Antonio	#99 All American Racers	#32 Spice Engineering	#1 Mazda Motorsports	#96 Leitzinger Racing	Results
		Juan Manuel Fangio II	Parker Johnstone Tomás López	Pete Halsmer	David Loring
17	Watkins Glen	Did Not Participate	Did Not Participate	#6 Whistler Radar	#37 Mazda Motorsports	Results
				Dorsey Schroeder	John Finger Amos Johnson
18	Lime Rock	Did Not Participate	Did Not Participate	#9 Whistler Radar	#00 Full Time Racing	Results
				Robby Gordon	Don Knowles
19	Tampa	#16 Dyson Racing	#19 David Tennyson	Did Not Participate	Did Not Participate	Results
		James Weaver	Martino Finotto Ruggero Melgrati
20	Del Mar	#99 All American Racers	#48 Comptech Racing	#9 Whistler Radar	#00 Full Time Racing	Results
		Juan Manuel Fangio II	Parker Johnstone Doug Peterson	Robby Gordon	Don Knowles

Drivers Championships

Manufacturers championships

A championship for manufacturers was awarded to each of the four classes. For the prototype classes, only the manufacturer of the engine was used rather than the manufacturer of the chassis.

Points were awarded to the top 10 on the scale of 20-15-12-10-8-6-4-3-2-1, with exception for the 12 Hours of Sebring, which added five points to each position on the scale, and the 24 Hours of Daytona, which added eight points.

Only the highest-ranking entry from a manufacturer was awarded points at each event. Any other finishes by that manufacturer were merely skipped.

GTP Championship

Pos	Manufacturer	Rd 1	Rd 2	Rd 3	Rd 4	Rd 6	Rd 7	Rd 8	Rd 9	Rd 11	Rd 13	Rd 14	Rd 15	Rd 16	Rd 19	Rd 20	Total
1	Nissan	14	20	25	20	20	15	10	20	20	15	10	20	15	15	12	251
2	Jaguar	28		17	15	12	8	20	2	12	10	20	15	3	10	15	187
3	Toyota	9	4	7	12	4	20	8	12	3	20	15	12	20	6	20	172
4	Porsche	20	12	15	10	3	2	6	8	15	8	3	10	8	20	10	150
5	Chevrolet			8	3	10	12	15	10	1	2	12	4	2			79
6	Pontiac				2	6		4	4		3	6		1	2	3	31
7	Oldsmobile									4				6			10
8	Audi		6														6
9	Ferrari									2							2

Lights Championship

Pos	Manufacturer	Rd 1	Rd 2	Rd 3	Rd 4	Rd 6	Rd 7	Rd 8	Rd 9	Rd 11	Rd 13	Rd 14	Rd 15	Rd 16	Rd 19	Rd 20	Total
1	Buick	20	20	25	20	20	20	15	20	12	20	20	15	20	15	12	274
2	Ferrari	9	15	17	15	15	12	20	12	20	12	15	20	4	20	15	221
3	Pontiac	23	4	20	8	3	4				4			8		20	94
4	Mazda	28	1	6	6			10		15			8				74
5	Chevrolet	18									6	8					32

GTO Championship

Pos	Manufacturer	Rd 1	Rd 2	Rd 3	Rd 5	Rd 7	Rd 9	Rd 10	Rd 12	Rd 14	Rd 15	Rd 16	Rd 17	Rd 18	Rd 20	Total
1	Mercury	28	12	25	20	15	15	12	20	20	10	8	20	20	20	245
2	Mazda	23	15	17	15	20	20	8	15	10	6	20	8	6	15	198
3	Nissan		20		12	3	10	20	12	15	20	15		15	12	154
4	Chevrolet	14	6	15	6	4	2	10	4	4	2	10	10	3	8	98
5	Ferrari					2	12	15			15		15	8		67
6	Ford	16	8		8				6						6	44

GTU Championship

Pos	Manufacturer	Rd 1	Rd 2	Rd 3	Rd 5	Rd 7	Rd 9	Rd 10	Rd 12	Rd 14	Rd 15	Rd 16	Rd 17	Rd 18	Rd 20	Total
1	Mazda	28	10	20	20	20	12	15	12	20	20	10	20	12	15	234
2	Dodge	12	15	13	3	12	20	20	15	15	12	15	12	20	20	204
3	Nissan	14	20	25	10	15	15	8	20	10	15	20	2	15	12	201
4	Porsche	23						10		2	1	1	8	6		51
5	Pontiac	16	4	8												28

References