# 1955 Nations motorcycle Grand Prix

The 1955 Nations motorcycle Grand Prix was the eighth and final round of the 1955 Grand Prix motorcycle racing season. It took place on 4 September 1955 at the Autodromo Nazionale Monza.

## 500 cc classification

| Pos | Rider | Manufacturer | Laps | Time | Points |
| 1 | Umberto Masetti | MV Agusta | 35 | 1:08:04.1 | 8 |
| 2 | Reg Armstrong | Gilera | 35 | +0.5 | 6 |
| 3 | Geoff Duke | Gilera | 35 | +1.6 | 4 |
| 4 | Giuseppe Colnago | Gilera | | | 3 |
| 5 | Alfredo Milani | Gilera | | | 2 |
| 6 | Ernst Riedelbauch | BMW | | | 1 |
| 7 | Gerold Klinger | BMW | | | |
| 8 | Bill Hall | Norton | | | |
| 9 | Enrico Galante | Norton | | | |
| 10 | A. Cirelli | Gilera | | | |

## 350 cc classification

| Pos | Rider | Manufacturer | Laps | Time | Points |
| 1 | Dickie Dale | Moto Guzzi | 27 | 55:21.3 | 8 |
| 2 | Bill Lomas | Moto Guzzi | 27 | +0.1 | 6 |
| 3 | Ken Kavanagh | Moto Guzzi | 27 | +13.1 | 4 |
| 4 | Enrico Lorenzetti | Moto Guzzi | | | 3 |
| 5 | August Hobl | DKW | | | 2 |
| 6 | Roberto Colombo | Moto Guzzi | | | 1 |
| 7 | Helmut Hallmeier | NSU | | | |
| 8 | Siegfried Wünsche | DKW | | | |
| 9 | Arthur Wheeler | AJS | | | |
| 10 | Lodovico Facchinelli | AJS | | | |
| 11 | Bill Hall | Norton | | | |
| 12 | Erwin Aldinger | Horex | | | |
| 13 | Sven Andersson | Norton | | | |
| 14 | Arthur Wick | AJS | | | |

## 250 cc classification

| Pos | Rider | Manufacturer | Laps | Time | Points |
| 1 | Carlo Ubbiali | MV Agusta | 22 | 46:34.1 | 8 |
| 2 | Hans Baltisberger | NSU | 22 | +0.3 | 6 |
| 3 | Sammy Miller | NSU | 22 | +15.6 | 4 |
| 4 | Hermann Paul Müller | NSU | | | 3 |
| 5 | Bill Lomas | MV Agusta | | | 2 |
| 6 | Umberto Masetti | MV Agusta | | | 1 |
| 7 | Roberto Colombo | Moto Guzzi | | | |
| 8 | Kurt Knopf | NSU | | | |
| 9 | Karl Lottes | DKW | | | |
| 10 | Arthur Wheeler | Moto Guzzi | | | |
| 11 | Günter Beer | Adler | | | |
| 12 | Adelmo Mandolini | Moto Guzzi | | | |
| 13 | Lanfranco Baviera | Moto Guzzi | | | |
| 14 | Alfredo Flores | Moto Guzzi | | | |
| 15 | Dino Fagiolini | Moto Guzzi | | | |
| 16 | René Guérin | Moto Guzzi | | | |
| 17 | Guido Sala | Moto Guzzi | | | |

## 125cc classification

| Pos | Rider | Manufacturer | Laps | Time/Retired | Points |
| 1 | Carlo Ubbiali | MV Agusta | 18 | 41:03.8 | 8 |
| 2 | Remo Venturi | MV Agusta | 18 | +27.1 | 6 |
| 3 | Angelo Copeta | MV Agusta | 18 | +1:42.2 | 4 |
| 4 | August Hobl | DKW | 18 | +1:44.5 | 3 |
| 5 | Siegfried Wünsche | DKW | 17 | +1 lap | 2 |
| 6 | Paolo Campanelli | Mondial | 17 | +1 lap | 1 |
| 7 | Guido Sala | MV Agusta | | | |
| 8 | Karl Lottes | MV Agusta | | | |
| 9 | Willi Scheidhauer | MV Agusta | | | |
| 10 | Florian Camathias | MV Agusta | | | |
| 24 starters, 15 finishers ||||||
| Source: ||||||

## Sidecar classification

| Pos | Rider | Passenger | Manufacturer | Laps | Time | Points |
| 1 | Wilhelm Noll | Fritz Cron | BMW | 18 | 41:21.6 | 8 |
| 2 | Walter Schneider | Hans Strauss | BMW | 18 | +0.2 | 6 |
| 3 | Jacques Drion | Inge Stoll | Norton | 18 | +58.6 | 4 |
| 4 | Florian Camathias | Maurice Büla | BMW | | | 3 |
| 5 | Jean Murit | Francis Flahaut | BMW | | | 2 |
| 6 | Fritz Seeber | Franz Heiss | BMW | | | 1 |
| 7 | Friedrich Staschel | Edgar Perduss | BMW | | | |
| 8 | Loni Neussner | ? | Norton | | | |
| 9 | Alfonso Sammarchi | ? | Norton | | | |
| 10 | Fritz Mühlemann | K. Tuscher | BSA | | | |
| 11 | A. Baldi | ? | BSA | | | |