1988 - Road America 500 km

17 July 1988 - Road America, USA

Chip Robinson and Derek Bell finish 2nd in a Porsche 962, 15.978 seconds behind the winning Nissan GTP ZX-T driven by Geoff Brabham ans John Morton

Overall - 2nd, 3rd : GTP - 2nd, 3rd

No.	Car	#	Class	Drivers	Entrant	Pos	Class	Grid	Notes
14	Porsche 962	962-HR7	GTP	Chip Robinson (USA)/Derek Bell (GB)	Holbert Racing (USA)	2nd	2nd	9th	78 laps
16	Porsche 962 GTi	962GTi-DR1	GTP	Price Cobb (USA)/James Weaver (GB)	Blaupunkt/Dyson (USA)	3rd	3rd	7th	78 laps
10	Porsche 962	962-F01	GTP	John Hotchkis (USA)/Jim Adams (USA)	Hotchkis Racing Inc. (USA)	6th	6th	6th	75 laps
86	Porsche 962		GTP	Bruce Leven (USA)/Rob Dyson (USA)	Bayside-Leven Motorsport (USA)	7th	7th	17th	75 laps
15	Porsche 962	962-HR2	GTP	Bernard Jourdain (MEX)/John Graham (CDN)	Kalagian Racing	9th	9th	8th	74 laps
20	Porsche 911		GTU	Jay Kjoller (USA)/Patrick Mooney (USA)	Martinelli-Scott	35th	8th	51st	57 laps
91	Porsche 944 Turbo		GTO	Chester Vincentz (USA)	Electrodyne Performance Inc	50th	13th	38th	8 laps - DNF
3	Porsche 962	962-128	GTP	Oscar Larrauri (RA)	Brun Motorsports (CH)	51st	12th	1st	7 laps - DNF