Nuffield Universal-4 (4 DM) vs SOMECA SOM-55

9 material differences · fewer than 12

Tractor one

1954–1961

No measured PTO figure

Tractor two

1961–1963

No 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.

9 material differences · 6 fields identical or within 5%, which is not counted as material

Nuffield Universal-4 (4 DM) and SOMECA SOM-55, field by field
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	—
Three-point lift at ends declared	2,831 lb · 1,284 kg	2,976 lb · 1,350 kg	—
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 in · 1,745 mm	—
Height declared	80.7 in · 2,050 mm	72.5 in · 1,841 mm	+11% Universal-4 (4 DM)
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

Source

Source