As teammates — same car
Race finishesahead
Qualifyingahead
Prince Bira · Louis Rosier
Qualifying compares starting grid position, which covers every era — it includes any grid penalties.
Race H2H
9
—
8
17 shared
Qualifying H2H
11
—
6
17 shared
Championship record
0
World titles
0
0
Runner-up
0
0
Top-3 finishes
0
P8
Best championship
P4
Finished ahead in the standings:
0 · 1
1950
P4
Teammate battle by season
0
1
1954
Career totals
Prince Bira
Louis Rosier
Championships
0
0
Wins
0
0
Poles
0
0
Podiums
0
2
Fastest laps
0
0
Career points
8
18
Starts
19
38
Rate-adjusted · per start
Prince Bira
Louis Rosier
Win rate
0%
0%
Podium rate
0%
5.3%
Pole rate
0%
0%
Points / start
0.4
0.5
Avg grid
P13.1
P14.3
Avg finish
P12.1
P10.8
Finish rate
52.6%
65.8%
Rates reward peak form; totals reward longevity. Avg grid/finish: lower is better.
Why they retired
Prince Bira
Louis Rosier
Mechanical retirements
8
9
Crash retirements
1
4
Classified from the finishing status. Mechanical covers car failures, crash covers accidents, collisions and damage — fewer is better on both.
Milestones & racecraft
1950
Debut season
1950
—
First win
—
—
First pole
—
—
First title
—
P4
Best finish
P3
+1.1
Avg places gained
+3.5
Season points trajectory
Prince Bira
Louis Rosier
Final points each season — scoring systems changed over the eras.
Track by track
| Circuit | Prince Bira | Louis Rosier |
|---|---|---|
| W · Pod · Best | W · Pod · Best | |
| W · Pod · Best W · Pod · Best | ||
| Circuit de Spa-Francorchamps | 0 · 0 · P6 | 0 · 1 · P3 |
| Prince Bira 0 · 0 · P6 0 · 1 · P3 Louis Rosier | ||
| Circuit Bremgarten | 0 · 0 · P4 | 0 · 1 · P3 |
| Prince Bira 0 · 0 · P4 0 · 1 · P3 Louis Rosier | ||
| Silverstone Circuit | 0 · 0 · P7 | 0 · 0 · P5 |
| Prince Bira 0 · 0 · P7 0 · 0 · P5 Louis Rosier | ||
| Autodromo Nazionale di Monza | 0 · 0 · P11 | 0 · 0 · P4 |
| Prince Bira 0 · 0 · P11 0 · 0 · P4 Louis Rosier | ||
| Reims-Gueux | 0 · 0 · P4 | 0 · 0 · P6 |
| Prince Bira 0 · 0 · P4 0 · 0 · P6 Louis Rosier | ||
| Nürburgring | 0 · 0 · — | 0 · 0 · P5 |
| Prince Bira 0 · 0 · — 0 · 0 · P5 Louis Rosier | ||
| Circuit de Monaco | 0 · 0 · P5 | 0 · 0 · — |
| Prince Bira 0 · 0 · P5 0 · 0 · — Louis Rosier | ||
| Circuit de Pedralbes | 0 · 0 · P9 | 0 · 0 · P7 |
| Prince Bira 0 · 0 · P9 0 · 0 · P7 Louis Rosier | ||
| Rouen-Les-Essarts | 0 · 0 · — | 0 · 0 · — |
| Prince Bira 0 · 0 · — 0 · 0 · — Louis Rosier | ||
| Autódromo Juan y Oscar Gálvez | 0 · 0 · P7 | 0 · 0 · — |
| Prince Bira 0 · 0 · P7 0 · 0 · — Louis Rosier | ||
Team history
Basis
Head-to-head counts races where both drivers were classified, compared by final position (post-penalty). Teammate section counts only seasons in the same car. Career totals mirror the source data. Data: Jolpica-F1 (CC BY-NC-SA 4.0).