Team Chassis Engine Tires No Drivers
United States Chip Ganassi Racing Reynard 98i Honda Firestone 1 Italy Alex Zanardi
12 United States Jimmy Vasser
United States Marlboro Team Penske Penske PC27-98 Mercedes Goodyear 2 United States Al Unser, Jr.
3 Brazil André Ribeiro
United States Walker Racing Reynard 98i Honda Goodyear 5 Brazil Gil de Ferran
United States Newman-Haas Racing Swift 009.c Ford XB Goodyear 6 United States Michael Andretti
11 Brazil Christian Fittipaldi
Brazil Roberto Moreno
United States Team Rahal Reynard 98i Ford XB Firestone 7 United States Bobby Rahal
8 United States Bryan Herta
United States Hogan Racing Reynard 98i Mercedes Firestone 9 Finland JJ Lehto
United States Della Penna Motorsports Swift 009.c Ford XB Firestone 10 United States Richie Hearn
43 Japan Hideshi Matsuda
United States Project Indy Reynard 97i Ford XB Goodyear 15 Brazil Roberto Moreno
Italy Domenico Schiattarella
United States Bettenhausen Racing Reynard 98i Mercedes Goodyear 16 Brazil Hélio Castroneves
United States PacWest Racing Group Reynard 98i Mercedes Firestone 17 Brazil Maurício Gugelmin
18 United Kingdom Mark Blundell
United States Payton/Coyne Racing Reynard 98i Ford XB Firestone 19 Mexico Michel Jourdain, Jr.
34 United States Dennis Vitolo
Brazil Gualter Salles
United States Patrick Racing Reynard 98i Ford XB Firestone 20 United States Scott Pruett
40 Mexico Adrián Fernández
United States Tasman Motorsports Group Reynard 98i Honda Firestone 21 Brazil Tony Kanaan
United States Arciero-Wells Racing Reynard 98i Toyota Firestone 24 Japan Hiro Matsushita
United States Robby Gordon
25 Italy Max Papis
United States Team KOOL Green Reynard 98i Honda Firestone 26 Canada Paul Tracy
27 United Kingdom Dario Franchitti
United States Forsythe Racing Reynard 98i Mercedes Firestone 33 Canada Patrick Carpentier
99 Canada Greg Moore
United States All American Racing Reynard 98i
Eagle 987
Toyota Goodyear 36 United States Alex Barron
98 United States P. J. Jones
Italy Vincenzo Sospiri
United States Davis Racing Lola T98/00 Ford XB Goodyear 77 Germany Arnd Meier