The 1998 Superflo 12 Hours of Sebring was the 46th running of the 12 Hours of Sebring. It also served as the inaugural round of the 1998 IMSA GT Championship season. It took place at Sebring International Raceway, Florida, on March 22, 1998.
The 1998 Superflo 12 Hours of Sebring was the 46th running of the 12 Hours of Sebring. It also served as the inaugural round of the 1998 IMSA GT Championship season. It took place at Sebring International Raceway, Florida, on March 22, 1998.
Class winners in bold.
| Pos | Class | No | Team | Drivers | Chassis | Tyre | Laps |
|---|---|---|---|---|---|---|---|
| Engine | |||||||
| 1 | WSC | 30 |  MOMO Doran Racing |  Didier Theys  Mauro Baldi Gianpiero Moretti | Ferrari 333 SP | Y | 319 |
| Ferrari F310E 4.0 L V12 | |||||||
| 2 | GT1 | 4 | Panoz Motorsports |  Andy Wallace  David Brabham | Panoz GTR-1 | M | 318 |
| Ford (Roush) 6.0 L V8 | |||||||
| 3 | GT1 | 74 | Champion Motors | Thierry Boutsen  Bob Wollek Andy Pilgrim | Porsche 911 GT1 | M | 318 |
| Porsche 3.2 L Turbo Flat-6 | |||||||
| 4 | GT1 | 5 | Panoz Motorsports | Éric Bernard Jamie Davies Doc Bundy | Panoz GTR-1 | M | 312 |
| Ford (Roush) 6.0 L V8 | |||||||
| 5 | GT2 | 66 |  Konrad Racing | Nick Ham Franz Konrad | Porsche 911 GT2 | M | 300 |
| Porsche 3.6 L Turbo Flat-6 | |||||||
| 6 DNF | WSC | 7 | Doyle-Risi Racing |  Wayne Taylor Eric van de Poele  Fermín Vélez | Ferrari 333 SP | P | 298 |
| Ferrari F310E 4.0 L V12 | |||||||
| 7 | GT2 | 65 | Saleen Allen Speedlab | Steve Saleen Ron Johnson Tommy Archer | Saleen Mustang SR | ? | 297 |
| Ford 5.9 L V8 | |||||||
| 8 | GT1 | 91 | Rock Valley Racing | John Heinricy Stu Hayner Roger Schramm | Chevrolet Camaro | G | 297 |
| Chevrolet V8 | |||||||
| 9 | GT2 | 04 |  C.J. Motorsports | John Morton John Graham Ron Fellows | Porsche 911 GT2 | G | 296 |
| Porsche 3.6 L Turbo Flat-6 | |||||||
| 10 | GT2 | 99 | Larry Schumacher | Robert Nearn John O'Steen Larry Schumacher | Porsche 911 GT2 | P | 296 |
| Porsche 3.6 L Turbo Flat-6 | |||||||
| 11 | GT3 | 10 | Prototype Technology Group | Bill Auberlen Boris Said | BMW M3 | Y | 295 |
| BMW 3.2 L I6 | |||||||
| 12 | GT3 | 6 | Prototype Technology Group | Peter Cunningham Ross Bentley Mark Simo | BMW M3 | Y | 293 |
| BMW 3.2 L I6 | |||||||
| 13 | WSC | 20 | Dyson Racing | Dorsey Schroeder Butch Leitzinger James Weaver Elliott Forbes-Robinson | Riley & Scott Mk III | G | 290 |
| Ford 5.0 L V8 | |||||||
| 14 | GT3 | 23 | Alex Job Racing | Charles Slater Cort Wagner Darryl Havens | Porsche 911 Carrera RSR | P | 286 |
| Porsche 3.8 L Flat-6 | |||||||
| 15 | GT3 | 07 | G & W Motorsports |  Patrick Huisman Danny Marshall Steve Marshall Darren Law | Porsche 993 | P | 285 |
| Porsche 3.8 L Flat-6 | |||||||
| 16 | GT3 | 76 | Team A.R.E. | John Ruther Jake Vargo Nick Anegelos Peter Argetsinger | Porsche 993 Carrera RSR | Y | 283 |
| Porsche 3.8 L Flat-6 | |||||||
| 17 | WSC | 95 | TRV Motorsport | Jeret Schroeder Tom Volk Lyn St. James | Kudzu DL-4 | G | 283 |
| Chevrolet 6.0 L V8 | |||||||
| 18 | GT3 | 24 | Tim Vargo | Jack Refenning Tim Vargo Josh Vargo Brady Refenning | Porsche 911 Carrera RSR | P | 277 |
| Porsche 3.8 L Flat-6 | |||||||
| 19 | GT3 | 25 | Alex Job Racing | Charles Slater Don Kitch Angelo Cilli Dale White Michael Peterson | Porsche 911 Carrera RSR | P | 268 |
| Porsche 3.8 L Flat-6 | |||||||
| 20 | GT1 | 2 | Mosler Automotive | Shane Lewis Vic Rice Tom Reese | Mosler Raptor | P | 263 |
| Chevrolet 6.3 L V8 | |||||||
| 21 | GT3 | 96 | Olive Garden Racing | Kevin Wheeler Mike Davies Ron Zitza | Porsche 911 Carrera RSR | P | 259 |
| Porsche 3.8 L Flat-6 | |||||||
| 22 | GT1 | 71 | Art Pilla | Arthur Pilla Oma Kimbrough David Kitchak | Porsche 911 GT2 | ? | 253 |
| Porsche 3.6 L Turbo Flat-6 | |||||||
| 23 DNF | GT3 | 46 | Bill Radar | Max Schmidt Chris Bingham | Porsche 911 Carrera RSR | P | 249 |
| Porsche 3.8 L Flat-6 | |||||||
| 24 DNF | WSC | 39 | Matthews-Colucci Racing | David Murry Hurley Haywood Derek Bell Jim Matthews | Riley & Scott Mk III | P | 247 |
| Ford 5.0 L V8 | |||||||
| 25 | GT3 | 32 | Phoenix Motorsports | Don Knowles Jim Michaelian Jim McNeely John Heinricy | Pontiac Firebird | T | 246 |
| Pontiac V8 | |||||||
| 26 | WSC | 12 | Genesis Racing | Chuck Goldsborough Michael DeFontes Mark Neuhaus Rick Fairbanks | Hawk MD3R | G | 244 |
| Mazda 2.0 L 3-Rotor | |||||||
| 27 DNF | GT3 | 68 | The Racer's Group | Stephen Earle Philip Collin Kevin Buckler | Porsche 911 Carrera RSR | ? | 242 |
| Porsche 3.8 L Flat-6 | |||||||
| 28 DNF | GT1 | 11 | Robinson Racing | Jack Baldwin Irv Hoerr George Robinson | Oldsmobile Aurora GTS-1 | ? | 235 |
| Oldsmobile 4.0 L V8 | |||||||
| 29 DNF | GT3 | 55 | AASCO Performance | Tim Ralston Kelly Collins Jorge Trejos | Porsche 911 Carrera RSR | P | 232 |
| Porsche 3.8 L Flat-6 | |||||||
| 30 DNF | WSC | 28 | Intersport Racing | Jon Field Butch Brickell Rick Sutherland | Riley & Scott Mk III | G | 173 |
| Ford 5.0 L V8 | |||||||
| 31 DNF | GT2 | 77 | Konrad Motorsport | Wido Rössler Peter Kitchak Matt Turner | Porsche 911 GT2 | D | 170 |
| Porsche 3.6 L Turbo Flat-6 | |||||||
| 32 DNF | GT3 | 1 | Prototype Technology Group | Craig Carter Andy Petery Giovanna Amati | BMW M3 | Y | 170 |
| BMW 3.2 L I6 | |||||||
| 33 DNF | GT2 | 01 | Rohr | Sylvain Tremblay Martin Snow Jochen Rohr | Porsche 911 GT2 | P | 160 |
| Porsche 3.6 L Turbo Flat-6 | |||||||
| 34 DNF | GT2 | 38 | Mark Hein | Mark Hein Gary Blackman John Green Pete Halsmer | Acura NSX | G | 159 |
| Acura 3.2 L V6 | |||||||
| 35 DNF | GT1 | 87 | John Annis | John Annis Lee Hill Randy Pobst Mick Robinson | Chevrolet Camaro | ? | 152 |
| Chevrolet V8 | |||||||
| 36 DNF | WSC | 8 | Transatlantic Racing Services | Johnny O'Connell Henry Camferdam Scott Schubot | Riley & Scott Mk III | D | 130 |
| Ford 5.0 L V8 | |||||||
| 37 DNF | WSC | 59 | Intersport Racing | Alex Smith Simon Gregg Joaquin DeSoto John Mirro | Spice SC95 | G | 129 |
| Oldsmobile Aurora 4.0 L V8 | |||||||
| 38 DNF | GT3 | 54 | Bell Motorsports | Terry Borcheller Carlos DeQuesada Scott Neuman Joe Varde | BMW M3 | Y | 125 |
| BMW 3.2 L I6 | |||||||
| 39 DNF | GT3 | 93 |  Team Ecuador | Henry Taleb Rino Mastronardi | Nissan 240SX | Y | 95 |
| Nissan 2.4 L I4 | |||||||
| 40 DNF | GT3 | 57 | Kryderacing | Luis Sereix Frank Del Vecchio Reed Kryder | Nissan 240SX | ? | 42 |
| Nissan 2.4 L I4 | |||||||
| 41 DNF | WSC | 63 | Downing Atlanta | Jim Pace  Yojiro Terada Jim Downing | Kudzu DLM | G | 36 |
| Mazda 2.0 L 3-Rotor | |||||||
| 42 DNF | GT3 | 86 | First Union | Darren Law Steve Pfeffer Mike Fitzgerald | Porsche 993 | ? | 34 |
| Porsche 3.8 L Flat-6 | |||||||
| 43 DNF | GT3 | 67 | The Racer's Group | Peter Baron Dennis O'Keefe Steve Pelke | Porsche 911 Carrera RSR | ? | 24 |
| Porsche 3.8L Flat-6 | |||||||
| 44 DNF | GT2 | 15 | Jon Lewis | Bill Eagle Dorsey Schroeder | Vector M12 | G | 16 |
| Lamborghini 5.7 L V12 | |||||||
| 45 DNF | WSC | 16 | Dyson Racing | James Weaver Elliott Forbes-Robinson Butch Leitzinger | Riley & Scott Mk III | G | 7 |
| Ford 5.0L V8 | |||||||
| 46 DNF | GT2 | 69 | Gustl Spreng | Gustl Spreng Kersten Jodexnis Ray Mummery | Porsche 993 Carrera Turbo | Y | 6 |
| Porsche 3.6 L Turbo Flat-6 | |||||||
| 47 DNF | GT3 | 33 | Phoenix Racing | Steve McNeely Jim Michealian Joe Aquilante | Pontiac Firebird | ? | 4 |
| Pontiac V8 | |||||||
| 48 DNF | GT1 | 3 | Greg Malvaso | Jerry Kinn Chuck Singletary Gerre Payvis | Chevrolet Camaro | ? | 0 |
| Chevrolet V8 |