1989 IndyCar season Drivers and constructors Drivers and constructors

| Team | Chassis | Engine | Tires | Drivers |
|---|---|---|---|---|
| Dale Coyne Racing | Lola | Cosworth | Goodyear | John Paul, Jr. |
| ATEC Environmental | Lola | Cosworth | Goodyear | Guido Daccò |
| Bernstein Racing | Lola | Buick | Goodyear | Jim Crawford |
| Saleen | March | Cosworth | Goodyear | Steve Saleen |
| Gohr Racing | Lola / March | Cosworth | Goodyear | Jeff Wood |
| Gohr Racing | Lola / March | Cosworth | Goodyear | Tero Palmroth |
| Bettenhausen Motorsports | Lola | Cosworth | Goodyear | Jon Beekhuis |
| Bettenhausen Motorsports | Lola | Cosworth | Goodyear | Steve Chassey |
| Bettenhausen Motorsports | Lola | Cosworth | Goodyear | Michael Greenfield |
| Bettenhausen Motorsports | Lola | Cosworth | Goodyear | Dennis Vitolo |
| Bettenhausen Motorsports | Lola | Cosworth | Goodyear | John Paul, Jr. |
| Bettenhausen Motorsports | Lola | Cosworth | Goodyear | Fulvio Ballabio |
| Bettenhausen Motorsports | Lola | Cosworth | Goodyear | Tony Bettenhausen, Jr. |
| Mann Motorsports | Lola | Buick | Goodyear | Gary Bettenhausen |