9 material differences · fewer than 12
Tractor oneFiat 50-66 (DT)1989–1992No measured PTO figureTractor twoLamborghini 5501986–1997No measured PTO figure
Which should you choose?
Read our verdict on the 50-66 (DT) and the 550 → 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 | 50-66 (DT) | 550 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 49.3 hp | 49.3 hp | — |
| Engine declared | FIAT-IVECO 8035.06 | SAME 983-L | differs |
| Displacement declared | 2.71 L | 2.72 L | — |
| Maximum torque declared | 114 lb·ft · 155 N·m | 104 lb·ft · 141 N·m | +10% 50-66 (DT) |
| Transmission | |||
| Top speed declared | 15.5–18.6 mph · 25–30 km/h | 18.6 mph · 30 km/h | differs |
| Clutch declared | dry Valeo or LuK double clutch | — | — |
| Hydraulics & hitch | |||
| Pump flow declared | 8.7 gpm · 32.8 L/min | 7.5 gpm · 28.5 L/min | +15% 50-66 (DT) |
| Pressure declared | 3,118 psi · 215 bar | 1,740 psi · 120 bar | +79% 50-66 (DT) |
| Rear PTO speeds declared | 540/1000 rpm | 540 rpm / 1000 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 4,255 lb · 1,930 kg | 4,586 lb · 2,080 kg | +8% 550 |
| Maximum permissible mass declared | 8,488 lb · 3,850 kg | — | — |
| Wheelbase declared | 78.7 in · 1,999 mm | 82.3 in · 2,090 mm | — |
| Length declared | 127.6 in · 3,241 mm | 124.0 in · 3,150 mm | — |
| Width declared | 60.6–84.3 in · 1,540–2,140 mm | 65.9–85.6 in · 1,675–2,175 mm | differs |
| Ground clearance declared | 14.8 in · 375 mm | — | — |
| Turning radius, braked declared | 9.9 ft · 3.03 m | — | — |
| Fuel tank declared | 44.4 qt · 42.0 L | 58.1 qt · 55.0 L | +31% 550 |
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 50-66 (DT) sources
- Source: Traktorenlexikon, “Fiat 50-66/50-66 DT”
Lamborghini 550 sources
- Source: Traktorenlexikon, “Lamborghini 550 DT”
- Source: Traktorenlexikon, “Lamborghini 483 DT”