5 material differences · fewer than 12

Tractor oneFiat 1580 (DT)1979–1984No measured PTO figureTractor twoLamborghini R-1556 DT1981–1984No measured PTO figure

Which should you choose?

Read our verdict on the 1580 (DT) and the R-1556 DT → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.

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

Fiat 1580 (DT) and Lamborghini R-1556 DT, field by field
Field	1580 (DT)	R-1556 DT	Gap
Engine
Engine power, claimed claimed	153.0 hp	153 hp	—
Engine declared	FIAT-IVECO 8365.25.500 or 8365.05.501	HÜRLIMANN/SAURER H-1106/15-Turbo	differs
Displacement declared	8.10 L	6.84 L	+18% 1580 (DT)
Maximum torque declared	423–456 lb·ft · 573–618 N·m	434 lb·ft · 588 N·m	—
Transmission
Top speed declared	15.5–18.6 mph · 25–30 km/h	18.6 mph · 30 km/h	differs
Clutch declared	Pedal-operated Ferodo or LuK single-plate clutch	—	—
Hydraulics & hitch
Pump flow declared	14.7 gpm · 55.8 L/min	14.3 gpm · 54.0 L/min	—
Pressure declared	3,336–3,481 psi · 230–240 bar	—	—
Rear PTO speeds declared	540/1000 rpm	540/1000 rpm	—
Weight & dimensions
Unladen weight declared	14,330 lb · 6,500 kg	13,889 lb · 6,300 kg	—
Maximum permissible mass declared	22,046 lb · 10,000 kg	—	—
Wheelbase declared	116.7 in · 2,963 mm	113.3 in · 2,877 mm	—
Length declared	170.3 in · 4,325 mm	178.1 in · 4,525 mm	—
Width declared	92.9 in · 2,360 mm	95.3 in · 2,420 mm	—
Height, over the cab declared	109.6 in · 2,785 mm	110.2 in · 2,800 mm	—
Ground clearance declared	27.4 in · 695 mm	20.1 in · 510 mm	+36% 1580 (DT)
Turning radius, braked declared	15.1 ft · 4.60 m	—	—
Fuel tank declared	190.2 qt · 180.0 L	126.8 qt · 120.0 L	+50% 1580 (DT)

Source

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