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Event: Chisago Tribune presents the Nissan Grand Prix of Road AmericaDate: 19.8.1990
Track: Road America, Elkhart Lake (United States), 6.437 kmsOrganiser: unknown

Road America 500 Kilometres
Weather:wet, dry
Start time:unknown
Grid:unknown
Distance:250 kilometres
Attendance:unknown
Entered:23
Practiced:21
Qualified:19
Started:19
Finished:15
Classes:PractStart
IMSA GTP1311
IMSA GTP Lights88
Photo GalleryEntered CarsTechnical DataAppearanceRace ResultsGridQualifyingLap Times
Race notes:
Originally scheduled as two 250 kms heat event but was shortened to one heat due to weather condition.
Winners:
Overall:83Nissan NPT-90Geoff Brabham
IMSA GTP Lights:80Spice SE89P FerrariFinotto / Melgrati
Leaders:
laps 2-24:60Jaguar XJR-10
laps 25-26:83Nissan GTP ZX-T
laps 27-31:60Jaguar XJR-10
laps 32-39:83Nissan GTP ZX-T
Fastest Laps:
Overall:83Nissan NPT-90Geoff Brabham (AUS)1:55.7720200.1734 km/hlap 19
IMSA GTP Lights:80Spice SE89P FerrariRuggero Melgrati (I)2:11.9560175.6229 km/h
Pole Positions:
Overall:83Nissan NPT-90Geoff Brabham (AUS)1:54.8080201.8536 km/h
IMSA GTP Lights:32Spice SE90P BuickParker Johnstone (USA)2:08.7620179.9794 km/h
Notes of interest:
Top makes by numbers:Spice (8), Nissan (3), Jaguar (2), Eagle (2), Argo (2)
Top engines by numbers:Buick (4), Nissan (3), Jaguar (2), Toyota (2), Chevrolet (2), Ferrari (2), Mazda (2)
Top car types by numbers:Spice SE90P (4), Nissan NPT-90 (2), Jaguar XJR-10 (2), Eagle HF89 (2), Spice SE89P (2), Spice SE88P (2), Argo JM19 (2)
Driver nationalities:USA (15), I (2)
Team nationalities:USA (11), GB (4), CDN (2)
Most used colours:white (33%), blue (23%), red (12%), yellow (11%), green (5%), violet (5%)
Engine positions:mid-engined (100%)
Average engine size:3204 cc (with regard to 42% turbocharged cars and 10% cars with rotary engine an applicable size is 4116 cc)
Oldest known drivers:Martino Finotto (57), Rocky Moran (39), Tom Hessert (39)
Youngest known drivers:Davy Jones (26), Max Schmidt (26), Jay Cochran (27)

Official Race Programme:

CoverEntry ListScheduleTrack Map
Programme Cover - Road America 500 Kilometres 1990Entry List - Road America 500 Kilometres 1990Schedule of events is not available.Track map is not available.