Fiat 55-56 LM (DT) or UTB U-553 DT?
Which should you choose?
The data can’t decide this. Power at the PTO shaft cannot be compared: the 55-56 LM (DT) has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the U-553 DT has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft.
- The UTB U-553 DT suits loader and hydraulic implement work better on this data: 50% (875 kg / 1,929 lb) more three-point lift.
Generated by rule set compare@4 from the figures on the side-by-side table, allowed by route “the same stated configuration”. Measured figures are compared only with measured, claimed only with claimed, at the same test condition; differences within each figure’s tolerance are not called.
What decides it, question by question?
| Question | 55-56 LM (DT) | U-553 DT | Call |
|---|---|---|---|
| Which puts more power through the PTO shaft? | 40.4 kW (54.2 hp)Traktorenlexikon, “Fiatagri 55-56 LM (DT)” | 40.5 kW (54.3 hp)Traktorenlexikon, “UTB U 553 DT” | Not comparableNot comparable on power at the PTO shaft: the 55-56 LM (DT) has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the U-553 DT has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft. |
| Which turns a litre of fuel into more work at the shaft? | — | — | No figureNo call on fuel efficiency at the shaft: no figure on record for the 55-56 LM (DT) and the U-553 DT. |
| Which pulls harder at the drawbar? | — | — | No figureNo call on drawbar power: no figure on record for the 55-56 LM (DT) and the U-553 DT. |
| Which pumps more oil for implements? | 32.8 L/min (8.7 gpm)Traktorenlexikon, “Fiatagri 55-56 LM (DT)” | 34.0 L/min (9.0 gpm)Traktorenlexikon, “UTB U 553 DT” | EvenEven on hydraulic flow (both pump flow, as stated by the source): the difference is under the 10% threshold, too small to call. |
| Which lifts more on the three-point hitch? | 1,745 kg (3,847 lb)Traktorenlexikon, “Fiatagri 55-56 LM (DT)” | 2,620 kg (5,776 lb)Traktorenlexikon, “UTB U 553 DT” | AheadThe UTB U-553 DT has 50% more lift (875 kg / 1,929 lb) than the Fiat 55-56 LM (DT) (both lift at the hitch ends, as stated by the source). |
| Which is heavier, for traction? | 2,140 kg (4,718 lb)Traktorenlexikon, “Fiatagri 55-56 LM (DT)” | 3,125 kg (6,889 lb)Traktorenlexikon, “UTB U 553 DT” | Ahead (a fact, not an advantage)The UTB U-553 DT is 46% heavier (985 kg / 2,172 lb) than the Fiat 55-56 LM (DT) (both unladen weight, as stated by the source). |
| Which may carry more ballast and load? | — | — | No figureNo call on maximum permissible mass: no figure on record for the 55-56 LM (DT) and the U-553 DT. |
| Which has the wider choice of gears? | 8 to 12Traktorenlexikon, “Fiatagri 55-56 LM (DT)” | 12Traktorenlexikon, “UTB U 553 DT” | EvenEven on forward gears (both forward gears, as stated by the source): the figures vary by configuration and the ranges overlap. |
| Which offers a creeper range? | — | YesTraktorenlexikon, “UTB U 553 DT” | No figureNo call on a creeper range: not stated for the 55-56 LM (DT). |
| Which is faster on the road? | 25 km/h (15.5 mph) to 30 km/h (18.6 mph)Traktorenlexikon, “Fiatagri 55-56 LM (DT)” | 25 km/h (15.5 mph)Traktorenlexikon, “UTB U 553 DT” | EvenEven on top speed (both top speed forward, as stated by the source): the figures vary by configuration and the ranges overlap. |
| Which offers more PTO speeds? | 540 rpmTraktorenlexikon, “Fiatagri 55-56 LM (DT)” | 540/1000 rpmTraktorenlexikon, “UTB U 553 DT” | AheadThe UTB U-553 DT offers 1000 rpm at the PTO, which the Fiat 55-56 LM (DT) does not (as stated by the sources). |
| Which PTO runs independently of the ground drive? | — | — | No figureNo call on PTO independence: not stated for the 55-56 LM (DT) and the U-553 DT. |
| Which drives on both axles? | Two-wheel or four-wheel driveTraktorenlexikon, “Fiatagri 55-56 LM (DT)” | 4WDTraktorenlexikon, “UTB U 553 DT” | EvenEven on drive: every machine is available with four-wheel drive. |
| Which is newer, and what about parts? | 1988– | 1988–1991 | EvenSame era: production began within 5 years of each other. We hold no parts-availability data, so there is no call on parts. |
What does this mean in plain words?
- The UTB U-553 DT has 50% more lift (875 kg / 1,929 lb) than the Fiat 55-56 LM (DT) (both lift at the hitch ends, as stated by the source).
- The UTB U-553 DT is 46% heavier (985 kg / 2,172 lb) than the Fiat 55-56 LM (DT) (both unladen weight, as stated by the source).
- The UTB U-553 DT offers 1000 rpm at the PTO, which the Fiat 55-56 LM (DT) does not (as stated by the sources).
- Even on hydraulic flow (both pump flow, as stated by the source): the difference is under the 10% threshold, too small to call.
- Even on forward gears (both forward gears, as stated by the source): the figures vary by configuration and the ranges overlap.
- Even on top speed (both top speed forward, as stated by the source): the figures vary by configuration and the ranges overlap.
- Even on drive: every machine is available with four-wheel drive.
- Same era: production began within 5 years of each other. We hold no parts-availability data, so there is no call on parts.
- Not comparable on power at the PTO shaft: the 55-56 LM (DT) has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the U-553 DT has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft.
- No figure on record for every machine, so no call on: fuel efficiency at the shaft, drawbar power, maximum permissible mass, a creeper range and PTO independence.
← Every figure for both machines, side by side, with sources