9 material differences · fewer than 12
Tractor oneFiat 55-66 (DT)1985–1992No measured PTO figureTractor twoFiat 55-90 (DT)1984–1992No measured PTO figure
Which should you choose?
We will not advise between these two machines, because their power is identical, with the same weight or the same engine, which usually means one machine sold under two names; any difference below comes from how each source describes it. The figures below are side by side so you can judge them yourself; each says whether it was measured, claimed or declared by its source.
Field by field
9 material differences · 5 fields identical or within 5%, which is not counted as material
| Field | 55-66 (DT) | 55-90 (DT) | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 54.3 hp | 54.3 hp | — |
| Engine declared | FIAT-IVECO 8035.06.206 or 306 | FIAT-IVECO 8035.06.200 or (300) | differs |
| Displacement declared | 2.71 L | 2.71 L | — |
| Maximum torque declared | 128 lb·ft · 174 N·m | 129 lb·ft · 175 N·m | — |
| Transmission | |||
| Top speed declared | 15.5–24.9 mph · 25–40 km/h | 18.6–24.9 mph · 30–40 km/h | differs |
| Clutch declared | — | Dry Valeo, O.M.G. or LuK double clutch | — |
| Hydraulics & hitch | |||
| Pump flow declared | 8.7 gpm · 32.8 L/min | — | — |
| Pressure declared | 3,046 psi · 210 bar | — | — |
| Rear PTO speeds declared | 540/1000 rpm | 540/1000 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 4,971 lb · 2,255 kg | 6,129 lb · 2,780 kg | +23% 55-90 (DT) |
| Maximum permissible mass declared | 9,259 lb · 4,200 kg | — | — |
| Wheelbase declared | 85.6 in · 2,175 mm | 87.7 in · 2,227 mm | — |
| Length declared | 125.4 in · 3,185 mm | 147.0 in · 3,733 mm | +17% 55-90 (DT) |
| Width declared | 75.2 in · 1,910 mm | 67.3–90.9 in · 1,710–2,310 mm | differs |
| Height, over the cab declared | 90.7 in · 2,305 mm | 98.8 in · 2,510 mm | +9% 55-90 (DT) |
| Ground clearance declared | 19.5 in · 495 mm | 17.5 in · 445 mm | +11% 55-66 (DT) |
| Turning radius, braked declared | 12.0 ft · 3.65 m | 11.4 ft · 3.46 m | +5% 55-66 (DT) |
| Fuel tank declared | 77.1 qt · 73.0 L | 98.3 qt · 93.0 L | +27% 55-90 (DT) |
Fiat 55-66 (DT) sources
Source
- Source: Traktorenlexikon, “Fiat 55-66/55-66 DT”
Fiat 55-90 (DT) sources
Source
- Source: Traktorenlexikon, “Fiatagri 55-90/55-90 DT”