Total de marques participants: 25 (14 a Indianapolis)
Total de models participants: 36 (17 a Indianapolis)
Total de motors participants: 13 (2 a Indianapolis)
Total de pneumàtics participants: 4 (Pirelli, Dunlop, Englebert i Firestone)
Debutants: tots (evidentment)
Última temporada: 8 (Adams, Ferrari-Jaguar, Langley, Milano-Speluzzi, Olson, Rae, Snowberger, Wetteroth)
 |
| El Talbot-Lago T26C. |
| Marca | Model | Motor | Pneumàtics |
| Alfa Romeo | 158 159 |
158 LBC 1500 cc L8 S
159 LBC 1500 cc L8 S
|
Pirelli |
| Ferrari | 125 166-F2 166T 275 375 |
125 F1 1500 cc V12 S 166 F2 2000 cc V12 Jaguar XK 3400 cc L6 275 F1 3300 cc V12 375 F1 4500 cc V12 |
Dunlop/Pirelli Pirelli ??? Pirelli Pirelli |
| Talbot-Lago | T26C T26C-DA T26C-GS |
23CV 4500 cc L6 | Dunlop |
| Maserati | 4CLT-48 4CLT-50 4CLT-50 4CL 8CTF 8CTF |
4CL 1500 cc L4 S 4CL 1500 cc L4 S Milano 1500 cc L4 S 4CL 1500 cc L4 S Offenhauser 3000 cc L4 S Offenhauser 4500 cc L4 |
Pirelli Pirelli Pirelli Pirelli Firestone Firestone |
| Simca-Gordini | T15 | 15C 1500 cc L4 S | Englebert |
| ERA | A B E |
1500 cc L6 S | Dunlop |
| Alta | GP | 1500 cc L4 S | Dunlop |
| Cooper | T12 | JAP 1100 cc V2 | Dunlop |
| Milano | 1 | Speluzzi 1500 cc L4 S | Pirelli |
| Kurtis Kraft | 2000 3000 3000 3000 |
Offenhauser 4500 cc L4 Offenhauser 4500 cc L4 Offenhauser 3000 cc L4 S Cummins 3000 cc L6 CD |
Firestone |
| Marchese | Marchese | Offenhauser 4500 cc L4 | Firestone |
| Moore | Moore | Offenhauser 4500 cc L4 | Firestone |
| Deidt | Deidt | Offenhauser 4500 cc L4 | Firestone |
| Nichels | Nichels | Offenhauser 4500 cc L4 | Firestone |
| Lesovsky | Lesovsky | Offenhauser 4500 cc L4 | Firestone |
| Stevens | Stevens | Offenhauser 3000 cc L4 S | Firestone |
| Ewing | Ewing | Offenhauser 4500 cc L4 | Firestone |
| Olson | Olson | Offenhauser 4500 cc L4 | Firestone |
| Rae | Rae | Offenhauser 3000 cc L4 S | Firestone |
| Adams | Adams | Offenhauser 4500 cc L4 | Firestone |
| Watson | Watson | Offenhauser 4500 cc L4 | Firestone |
| Wetteroth | Wetteroth | Offenhauser 4500 cc L4 | Firestone |
| Langley | Langley | Offenhauser 4500 cc L4 | Firestone |
| Snowberger | Snowberger | Offenhauser 4500 cc L4 | Firestone |
 |
| L’Alfa 159 va debutar a finals de temporada. |