The 1999 Exxon Superflo 12 Hours of Sebring was the 47th running of the 12 Hours of Sebring. It also served as the first event in the new American Le Mans Series, which had replaced the IMSA GT Championship as the International Motor Sports Association's premiere series. It took place at Sebring International Raceway, Florida, on March 20, 1999.

Race results

Class winners in bold.

Pos	Class	No	Team	Drivers	Chassis	Tyre	Laps
					Engine
1	LMP	42	BMW Motorsport Schnitzer Motorsport	Jörg Müller JJ Lehto Tom Kristensen	BMW V12 LMR	M	313
					BMW S70 6.0 L V12
2	LMP	20	Dyson Racing	Butch Leitzinger Elliott Forbes-Robinson James Weaver	Riley & Scott Mk III	G	313
					Ford 5.0 L V8
3	LMP	77	Audi Sport Team Joest	Michele Alboreto Rinaldo Capello Stefan Johansson	Audi R8R	M	310
					Audi 3.6 L Turbo V8
4	LMP	38	Champion Racing	Dirk Müller Thierry Boutsen Bob Wollek	Porsche 911 GT1 Evo	M	308
					Porsche 3.2 L Turbo Flat-6
5	LMP	78	Audi Sport Team Joest	Perry McCarthy Frank Biela Emanuele Pirro	Audi R8R	M	304
					Audi 3.6 L Turbo V8
6	LMP	12	Doyle-Risi Racing	Alex Caffi Max Angelelli Wayne Taylor Juan Manuel Fangio II	Ferrari 333 SP	P	294
					Ferrari F310E 4.0 L V12
7	LMP	15	Hybrid R&D	Chris Bingham Ross Bentley Marc Duez	Riley & Scott Mk III	Y	292
					Ford 5.0 L V8
8	LMP	62	Downing Atlanta	Dennis Spencer A.J. Smith Rich Grupp	Kudzu DLM	G	290
					Mazda 2.0 L 3-Rotor
9	GTS	56	Martin Snow Racing	Martin Snow Melanie Snow Patrick Huisman	Porsche 911 GT2	M	287
					Porsche 3.6 L Turbo Flat-6
10	GTS	48	Freisinger Motorsport	Wolfgang Kaufmann Michel Ligonnet Lance Stewart	Porsche 911 GT2	D	285
					Porsche 3.6 L Turbo Flat-6
11	GT	23	Alex Job Racing	Kelly Collins Cort Wagner Darrly Havens	Porsche 911 Carrera RSR	Y	284
					Porsche 3.8 L Flat-6
12	LMP	63	Downing Atlanta	Jim Downing Chris Ronson Steve Pelke	Kudzu DLY	G	281
					Mazda R26B 2.6 L 4-Rotor
13	GT	22	Alex Job Racing	Randy Pobst Mike Fitzgerald David MacNeil	Porsche 911 Carrera RSR	Y	281
					Porsche 3.8 L Flat-6
14	GT	17	Aasco Performance Contemporary Motorsports	Mike Conte Bruno Lambert	Porsche 911 Carrera RSR	P	275
					Porsche 3.8 L Flat-6
15	GT	33	Gallade	Ulrich Gallade Ulli Richter Karl-Heinz Wlazik	Porsche 911 Carrera RSR	?	274
					Porsche 3.8 L Flat-6
16	GTS	61	Konrad Motorsport	Charles Slater Peter Kitchak Mike Hezemans	Porsche 911 GT2	D	273
					Porsche 3.6 L Turbo Flat-6
17 DNF	LMP	8	Transatlantic Racing	Duncan Dayton Scott Schubot Henry Camferdam	Riley & Scott Mk III	G	268
					Ford 5.0 L V8
18	GT	07	G & W Motorsports	Steve Marshall Danny Marshall Darren Law Sylvain Tremblay	Porsche 911 GT2 Evo	P	268
					Porsche 3.8 L Turbo Flat-6
19	LMP	28	Intersport Racing	Jon Field Ryan Jones Chris Goodwin	Lola B98/10	G	268
					Ford (Roush) 6.0 L V8
20	GT	54	Bell Motorsports	Stu Hayner Tony Kester Scott Neuman Matt Drendel	BMW M3	?	268
					BMW 3.2 L I6
21	LMP	31	Genesis Racing	Rick Fairbanks Dave Dullum Kurt Baumann	Riley & Scott Mk III	?	267
					Ford 5.0 L V8
22	GT	03	Reiser Callas Rennsport	Grady Willingham Craig Stanton Joel Reiser	Porsche 911 Carrera RSR	P	262
					Porsche 3.8 L Flat-6
23	GTS	3	Corvette Racing	Chris Kneifel John Paul Jr. Ron Fellows	Chevrolet Corvette C5-R	G	262
					Chevrolet 6.0 L V8
24 DNF	GT	70	Alegra Motorsports	Scooter Gabel Carlos DeQuesada Ugo Colombo	Porsche 911 Carrera RSR	?	258
					Porsche 3.8 L Flat-6
25 DNF	LMP	74	Robinson Racing	George Robinson Irv Hoerr Jack Baldwin	Riley & Scott Mk III	?	243
					Chevrolet 6.0 L V8
26 DNF	GT	7	Prototype Technology Group	Mark Simo Brian Cunningham Johannes van Overbeek	BMW M3	Y	238
					BMW 3.2 L I6
27	GTS	49	Freisinger Motorsport	Brad Creger Mandfred Jurasz Michael Irmgratz	Porsche 911 GT2	D	237
					Porsche 3.6 L Turbo Flat-6
28	GTS	04	CJ Motorsport	John Graham Davy Jones John Morton	Porsche 911 GT2	?	219
					Porsche 3.6 L Turbo Flat-6
29 DNF	LMP	16	Dyson Racing	Dorsey Schroeder Andy Wallace James Weaver	Riley & Scott Mk III	G	218
					Ford 5.0 L V8
30 DNF	GT	46	Team Transenergy	Sam Shalala Shareef Malnik Andre Toennis Bill Rollwitz	Porsche 911 Carrera RSR	?	206
					Porsche 3.8 L Flat-6
31 DNF	GT	10	Prototype Technology Group	Boris Said Peter Cunningham Hans-Joachim Stuck	BMW M3	Y	200
					BMW 3.2 L I6
32	LMP	29	Intersport Racing	John Mirro Sam Brown Butch Brickell Andy Petery	Riley & Scott Mk III	G	199
					Ford 5.0 L V8
33 DNF	LMP	2	Panoz Motor Sports	Johnny O'Connell Jan Magnussen John Nielsen	Panoz GTR-1	M	198
					Ford (Roush) 6.0 L V8
34 DNF	GT	02	Reiser Callas Rennsport	David Murry Johnny Mowlem	Porsche 911 Carrera RSR	P	197
					Porsche 3.8 L Flat-6
35	LMP	44	Autoexe Motorsports	Yojiro Terada Franck Fréon	Autoexe LMP99	Y	195
					Ford 6.0 L V8
36	GT	72	Bell Motorsports	Leo Hindery Peter Baron James McCormick Gian Luigi Buitoni	BMW M3	Y	190
					BMW 3.2 L I6
37 DNF	LMP	0	Team Rafanelli SRL	Eric van de Poele David Saelens Tomáš Enge	Riley & Scott Mk III	Y	185
					Judd GV4 4.0 L V10
38 DNF	GTS	4	Riley & Scott Inc.	Scott Sharp Andy Pilgrim John Heinricy	Chevrolet Corvette C5-R	G	157
					Chevrolet 6.0 L V8
39 DNF	GTS	83	ARBJH Development Chiefie Motorsports	Claudia Hürtgen Hubert Haupt Zak Brown	Porsche 911 GT2	?	149
					Porsche 3.6 L Turbo Flat-6
40 DNF	LMP	43	BMW Motorsport Schnitzer Motorsport	Joachim Winkelhock Pierluigi Martini Yannick Dalmas	BMW V12 LMR	M	135
					BMW S70 6.0 L V12
41 DNF	LMP	26	Price & Bscher	Thomas Bscher Steve Soper Bill Auberlen	BMW V12 LM	G	127
					BMW S70 6.0 L V12
42 DNF	LMP	5	Whittington Bros.	Don Whittington Dale Whittington Hurley Haywood	Riley & Scott Mk III	G	125
					Ford (Roush) 6.0 L V8
43 DNF	LMP	60	Kopf Precision	Kris Wilson Tim Moser	Keiler KII	G	122
					Ford 5.0L V8
44 DNF	LMP	36	Doran Enterprises Jim Matthews Racing	Tommy Kendall Jim Matthews Mark Dismore	Ferrari 333 SP	M	118
					Ferrari F310E 4.0 L V12
45 DNF	LMP	27	Doran Enterprises	Didier Theys Mauro Baldi Fredy Lienhard	Ferrari 333 SP	M	107
					Ferrari F310E 4.0L V12
46 DNF	LMP	1	Panoz Motor Sports	David Brabham Éric Bernard	Panoz GTR-1	M	103
					Ford (Roush) 6.0 L V8
47 DNF	GT	39	Broadfoot Racing	Stephen Earle Todd Snyder Allan Ziegelman Chris Mitchum	Porsche 911 Carrera RSR	?	100
					Porsche 3.8 L Flat-6
48 DNF	LMP	95	TRV Motorsport	Jeret Schroeder Pete Halsmer Tom Volk Barry Waddell	Riley & Scott Mk III	Y	87
					Chevrolet 6.0 L V8
49 DNF	LMP	18	Dollahite Racing	Bill Dollahite Doc Bundy Mike Davies	Ferrari 333 SP	P	84
					Ferrari F310E 4.0 L V12
50 DNF	GT	73	Auto Sport South	Kevin Wheeler Jack Refenning Brady Refenning Jake Vargo	Porsche 911 Carrera RSR	?	73
					Porsche 3.8 L Flat-6
51 DNF	GT	88	Vanderhoof Racing	Joe Varde Tim Ralston Blaise Alexander	Porsche 911 Carrera RSR	?	71
					Porsche 3.8 L Flat-6
52 DNF	GTS	50	Johnson Autosport	Robert Johnson Mike Hoke Tim McGlynn	Porsche 911 Turbo	?	70
					Porsche 3.6 L Turbo Flat-6
53 DNF	GTS	99	Schumacher Racing	Larry Schumacher Robert Nearn John O'Steen	Porsche 911 GT2	M	65
					Porsche 3.6 L Turbo Flat-6
54 DNF	GTS	55	Saleen/Allen Speedlab	Steve Saleen Terry Borcheller Ron Johnson Darren Law	Saleen Mustang SR	P	56
					Ford 8.0 L V8
55 DNF	LMP	66	Konrad Motorsport	Franz Konrad Jan Lammers Tim Hubman	Lola B98/10	D	48
					Lotus 3.5 L Turbo V8
56 DNF	GT	76	Team ARE	Peter Argetsinger Richard Polidori John McCaig	Porsche 911 Carrera RSR	Y	36
					Porsche 3.8 L Flat-6
57 DNF	GTS	71	DM Motorsports	Arthur Pilla Bob Mazzuoccola David Kicak Mark Montgomery	Porsche 911 GT2 Evo	?	32
					Porsche 3.8 L Turbo Flat-6
58 DNF	LMP	11	Doyle-Risi Racing	Anthony Lazzaro Max Angelelli Didier de Radiguès	Ferrari 333 SP	P	28
					Ferrari F310E 4.0 L V12
DNS	GT	25	RWS Motorsport	Kirsten Jodexnis Günther Blieninger Hans-Jörg Hofer Luca Riccitelli	Porsche 911 Carrera RSR	M	-
					Porsche 3.8 L Flat-6
DNS	LMP	97	Team Cascadia	Shane Lewis Vic Rice Ed Zabinski	Lola B98/12	P	-
					BMW 4.0 L V8

Statistics

• Pole Position - #42 BMW Motorsport (J.J. Lehto) - 1:49.850
• Fastest Lap - #0 Team Rafanelli (Eric van de Poele) - 1:51.608
• Distance - 1,863.781 km (1,158.100 mi)
• Average Speed - 155.103 km/h (96.377 mph)