8 material differences · fewer than 12
Tractor oneInternational Harvester 65881978–1981No measured PTO figureTractor twoOLIVER 2255 (4 WD)1972–1976No measured PTO figure
Which should you choose?
We will not advise between these two machines, because the drive differs (4WD; 2WD); they were not built in overlapping years (1978–1981; 1972–1976). 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
8 material differences · 3 fields identical or within 5%, which is not counted as material
| Field | 6588 | 2255 (4 WD) | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 149.9 hp | 146.0 hp | — |
| Engine declared | INTERNATIONAL HARVESTER DT-466 B | CATERPILLAR 3150 or 3208 | differs |
| Displacement declared | 7.64 L | — | — |
| Maximum torque declared | 450 lb·ft · 610 N·m | — | — |
| Transmission | |||
| Top speed declared | 18.6 mph · 30 km/h | 18.6 mph · 30 km/h | — |
| Clutch declared | — | Foot-operated dry single-disc clutch | — |
| Hydraulics & hitch | |||
| Hydraulic centre declared | — | Closed centre | — |
| Pump flow declared | 18.0 gpm · 68.1 L/min | 20.0 gpm · 75.7 L/min | +11% 2255 (4 WD) |
| Rear PTO speeds declared | 540/1000 rpm | 1000 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 17,619 lb · 7,992 kg | 16,407 lb · 7,442 kg | +7% 6588 |
| Wheelbase declared | 110.0 in · 2,794 mm | 108.4 in · 2,753 mm | — |
| Length declared | 228.3 in · 5,799 mm | 166.0 in · 4,216 mm | +38% 6588 |
| Width declared | 101.6 in · 2,581 mm | 81.5 in · 2,070 mm | +25% 6588 |
| Ground clearance declared | 28.4 in · 721 mm | 24.5 in · 622 mm | +16% 6588 |
| Turning radius, braked declared | — | 11.7 ft · 3.57 m | — |
| Fuel tank declared | 360.0 qt · 340.7 L | 140.0 qt · 132.5 L | +157% 6588 |
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.
International Harvester 6588 sources
- Source: Traktorenlexikon, “IHC 6588”
- Source: Traktorenlexikon, “IHC 3588”
OLIVER 2255 (4 WD) sources
- Source: Traktorenlexikon, “Oliver 2255”