Extra Championship
SummaryStatisticsTeamsPositionsTeam MatesYear by Year
| Name | Roly Crowther |
| Country |  New Zealand |
| First Race | New Zealand Grand Prix 12/01/1957 |
| Last Race | New Zealand Grand Prix 12/01/1957 |
| Best Qualifying | 14th – New Zealand Grand Prix 12/01/1957 |
| Best Result | 21st – New Zealand Grand Prix 12/01/1957 |
| DNF | 1 Time |
| DNQ | 2 Times |
| DNS | 1 Time |
| Season | Team | Team Mate | Best Pos | Points | Wins | Poles | Position | Qualifying | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1956 | Maserati | Fred Zambucka | 27 | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
| Harley Beckett | 27 | 28 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| Stirling Moss | 27 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | ||
| Tom Clark | 27 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | ||
