9 material differences · fewer than 12
Tractor oneNuffield Universal-4 (4 DM)1954–1961No measured PTO figureTractor twoSOMECA SOM-551961–1963No measured PTO figure
Which should you choose?
Read our verdict on the Universal-4 (4 DM) and the SOM-55 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
9 material differences · 4 fields identical or within 5%, which is not counted as material
| Field | Universal-4 (4 DM) | SOM-55 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 53.9 hp | 54.3 hp | — |
| Engine declared | BMC 34 TA | O.M.-FIAT CO 1D/55 | differs |
| Displacement declared | 3.40 L | 4.16 L | +22% SOM-55 |
| Maximum torque declared | 152 lb·ft · 206 N·m | — | — |
| Transmission | |||
| Top speed declared | 15.5 mph · 25 km/h | 14.9 mph · 24 km/h | — |
| Clutch declared | Pedal-operated dry BORG & BECK single-plate clutch | pedal operated two stage dry FERODO double clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | 7.2 gpm · 27.3 L/min | 5.7 gpm · 21.5 L/min | +27% Universal-4 (4 DM) |
| Pressure declared | — | 2,988 psi · 206 bar | — |
| Rear PTO speeds declared | 540 rpm | 540 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 4,945 lb · 2,243 kg | 5,776 lb · 2,620 kg | +17% SOM-55 |
| Wheelbase declared | 78.0 in · 1,981 mm | 80.0 in · 2,032 mm | — |
| Length declared | 121.7 in · 3,091 mm | 140.9 in · 3,580 mm | +16% SOM-55 |
| Width declared | 68.9 in · 1,750 mm | 68.7–95.1 in · 1,745–2,415 mm | differs |
| Ground clearance declared | 17.0 in · 432 mm | 15.4 in · 390 mm | +11% Universal-4 (4 DM) |
| Turning radius, braked declared | — | 10.8 ft · 3.30 m | — |
| Fuel tank declared | 67.2 qt · 63.6 L | 93.0 qt · 88.0 L | +38% SOM-55 |
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.
Nuffield Universal-4 (4 DM) sources
- Source: Traktorenlexikon, “Nuffield Universal 4 (1954-1961)”
SOMECA SOM-55 sources
- Source: Traktorenlexikon, “Someca SOM 55”