Which should you choose?
Read our verdict on the 50-R and the 555 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
14 material differences · 2 fields identical or within 5%, which is not counted as material
| Field | 50-R | 555 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 49.3 hp | 49.3 hp | — |
| Engine declared | O.M.-FIAT CO 1D-50/Var. 10 | IMR-PERKINS O-34/TA | differs |
| Displacement declared | 4.16 L | 3.34 L | +25% 50-R |
| Maximum torque declared | 177 lb·ft · 240 N·m | 141 lb·ft · 191 N·m | +26% 50-R |
| Transmission | |||
| Top speed declared | 14.3 mph · 23 km/h | 15.5 mph · 25 km/h | +9% 555 |
| Clutch declared | pedal-operated dry single-plate clutch | Pedal operated dry two-stage double clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | 5.3 gpm · 20.0 L/min | 4.0 gpm · 15.1 L/min | +32% 50-R |
| Three-point lift, at the coupling points declared | 2,094 lb · 950 kg | 2,601 lb · 1,180 kg | +24% 555 |
| Rear PTO speeds declared | 540 rpm | 540 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 5,071 lb · 2,300 kg | 4,123 lb · 1,870 kg | +23% 50-R |
| Wheelbase declared | 74.8 in · 1,900 mm | 84.8 in · 2,155 mm | +13% 555 |
| Length declared | 125.2 in · 3,180 mm | 137.2 in · 3,485 mm | +10% 555 |
| Width declared | 60.4–91.9 in · 1,535–2,335 mm | 66.9 in · 1,700 mm | differs |
| Ground clearance declared | 15.7 in · 400 mm | 23.9 in · 607 mm | +52% 555 |
| Turning radius, braked declared | 10.8 ft · 3.30 m | 12.3 ft · 3.75 m | +14% 555 |
| Fuel tank declared | 53.9 qt · 51.0 L | 47.6 qt · 45.0 L | +13% 50-R |
Height is not in this table. It is not one measurement: the sources measure it to different points — over the cab on some machines, over the steering wheel or the exhaust on others — and the same tractor measured two ways can differ by most of a metre. It appears here only when both machines' figures carry the point they were measured to and it is the same point, which is not the case for these two. Each machine's own page prints its height as its source gives it.
Fiat 50-R sources
Source
- Source: Traktorenlexikon, “Fiat 50 R”
IMT 555 sources
Source
- Source: Traktorenlexikon, “IMT 555”