13 material differences

Tractor oneIMT 5551964–1971No measured PTO figureTractor twoSOMECA 500 Special (TD)1972–1983No measured PTO figure

Which should you choose?

Read our verdict on the 555 and the 500 Special (TD) → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.

13 material differences · 4 fields identical or within 5%, which is not counted as material

IMT 555 and SOMECA 500 Special (TD), field by field
Field	555	500 Special (TD)	Gap
Engine
Engine power, claimed claimed	49.3 hp	49.3 hp	—
Engine declared	IMR-PERKINS O-34/TA	FIAT-IVECO 8035.02.203/303	differs
Displacement declared	3.34 L	2.59 L	+29% 555
Maximum torque declared	141 lb·ft · 191 N·m	116 lb·ft · 157 N·m	+22% 555
Transmission
Top speed declared	15.5 mph · 25 km/h	15.5 mph · 25 km/h	—
Clutch declared	Pedal operated dry two-stage double clutch	dry LuK double clutch	differs
Hydraulics & hitch
Pump flow declared	4.0 gpm · 15.1 L/min	5.8 gpm · 21.8 L/min	+44% 500 Special (TD)
Pressure declared	—	2,843 psi · 196 bar	—
Three-point lift, at the coupling points declared	2,601 lb · 1,180 kg	3,417 lb · 1,550 kg	+31% 500 Special (TD)
Rear PTO speeds declared	540 rpm	540 rpm	—
Weight & dimensions
Unladen weight declared	4,123 lb · 1,870 kg	4,145 lb · 1,880 kg	—
Wheelbase declared	84.8 in · 2,155 mm	76.9 in · 1,953 mm	+10% 555
Length declared	137.2 in · 3,485 mm	119.7 in · 3,041 mm	+15% 555
Width declared	66.9 in · 1,700 mm	65.4–87.8 in · 1,660–2,230 mm	differs
Height, over the steering wheel declared	66.5 in · 1,690 mm	61.1 in · 1,553 mm	+9% 555
Ground clearance declared	23.9 in · 607 mm	18.1 in · 459 mm	+32% 555
Turning radius, braked declared	12.3 ft · 3.75 m	9.7 ft · 2.95 m	+27% 555
Fuel tank declared	47.6 qt · 45.0 L	57.1 qt · 54.0 L	+20% 500 Special (TD)

Source

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