12 material differences
Tractor oneInternational Harvester F-2351957–1959No measured PTO figureTractor twoNuffield 4/25 (425)1968–1969No measured PTO figure
Which should you choose?
Read our verdict on the F-235 and the 4/25 (425) → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
12 material differences · 1 fields identical or within 5%, which is not counted as material
| Field | F-235 | 4/25 (425) | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 25.6 hp | 24.9 hp | — |
| Engine declared | INTERNATIONAL HARVESTER C-123 | BMC B 15 T | differs |
| Displacement declared | 2.01 L | — | — |
| Maximum torque declared | — | 51 lb·ft · 69 N·m | — |
| Transmission | |||
| Top speed declared | 10.6 mph · 17 km/h | 15.5 mph · 25 km/h | +47% 4/25 (425) |
| Clutch declared | Pedal-operated dry FERODO single-plate clutch | Pedal-operated dry BORG & BECK single-plate clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | 4.6 gpm · 17.3 L/min | 3.8 gpm · 14.5 L/min | +19% F-235 |
| Rear PTO speeds declared | 539 rpm | 540 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 3,472 lb · 1,575 kg | 2,220–2,328 lb · 1,007–1,056 kg | differs |
| Wheelbase declared | 91.1 in · 2,315 mm | 67.0 in · 1,702 mm | +36% F-235 |
| Length declared | 130.5 in · 3,315 mm | 109.4 in · 2,780 mm | +19% F-235 |
| Width declared | 78.0–87.8 in · 1,981–2,229 mm | 60.5 in · 1,537 mm | differs |
| Ground clearance declared | 22.3 in · 567 mm | 12.8 in · 324 mm | +75% F-235 |
| Turning radius, braked declared | 11.3 ft · 3.45 m | 9.4 ft · 2.87 m | +20% F-235 |
| Fuel tank declared | 44.1 qt · 41.75 L | 33.6 qt · 31.8 L | +31% F-235 |
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 F-235 sources
Source
- Source: Traktorenlexikon, “McCormick F-235”
- Source: Traktorenlexikon, “McCormick Farmall Super-A 1”
Nuffield 4/25 (425) sources
Source
- Source: Traktorenlexikon, “Nuffield 4/25 (1968-1969)”