7 material differences · fewer than 12
Tractor oneInternational Harvester WD-91940–1954No measured PTO figureTractor twoLanz D 25311937–1954No measured PTO figure
Which should you choose?
Read our verdict on the WD-9 and the D 2531 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
7 material differences · 0 fields identical or within 5%, which is not counted as material
| Field | WD-9 | D 2531 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 46.4 hp | 54.0 hp | +16% D 2531 |
| Engine declared | INTERNATIONAL HARVESTER D-335 | — | — |
| Displacement declared | 5.48 L | — | — |
| Transmission | |||
| Top speed declared | 16.2 mph · 26 km/h | 19.0 mph · 30.6 km/h | +18% D 2531 |
| Clutch declared | Pedal operated dry ROCKFORD single plate clutch | — | — |
| Hydraulics & hitch | |||
| Rear PTO speeds declared | 538 rpm | 750 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 5,851 lb · 2,654 kg | 9,480 lb · 4,300 kg | +62% D 2531 |
| Wheelbase declared | 83.0 in · 2,108 mm | 99.0 in · 2,515 mm | +19% D 2531 |
| Length declared | 134.3 in · 3,410 mm | 153.5 in · 3,900 mm | +14% D 2531 |
| Width declared | 75.7 in · 1,924 mm | 85.0 in · 2,160 mm | +12% D 2531 |
| Ground clearance declared | — | 10.8 in · 275 mm | — |
| Fuel tank declared | 140.0 qt · 132.5 L | 211.3 qt · 200 L | +51% D 2531 |
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 WD-9 sources
Source
- Source: Traktorenlexikon, “McCormick WD-9”
Lanz D 2531 sources
Source
- Source: Traktorenlexikon, “Lanz D 2531”