6 material differences · fewer than 12
Tractor oneBührer OP-17 Standard (A)1969–1975No measured PTO figureTractor twoSteyr 650 (a)1971–1977No measured PTO figure
Which should you choose?
Read our verdict on the OP-17 Standard (A) and the 650 (a) → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
6 material differences · 3 fields identical or within 5%, which is not counted as material
| Field | OP-17 Standard (A) | 650 (a) | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 45.3 hp | 49.3 hp | +9% 650 (a) |
| Engine declared | PERKINS 203 U (AD 4.203) | Steyr WD-408.81 | differs |
| Displacement declared | 3.33 L | 2.05 L | +62% OP-17 Standard (A) |
| Maximum torque declared | 153 lb·ft · 208 N·m | 142 lb·ft · 192 N·m | +8% OP-17 Standard (A) |
| Transmission | |||
| Top speed declared | 15.5 mph · 25 km/h | 18.6 mph · 30 km/h | +20% 650 (a) |
| Clutch declared | — | Pedal operated dry Fichtel & Sachs double clutch | — |
| Hydraulics & hitch | |||
| Pump flow declared | — | 9.0 gpm · 34.0 L/min | — |
| Pressure declared | — | 2,489 psi · 172 bar | — |
| Rear PTO speeds declared | 540 rpm | 540/1000 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 4,652 lb · 2,110 kg | 4,806 lb · 2,180 kg | — |
| Maximum permissible mass declared | — | 8,818 lb · 4,000 kg | — |
| Wheelbase declared | 79.9 in · 2,030 mm | 83.7 in · 2,125 mm | — |
| Length declared | 126.8 in · 3,220 mm | 138.2 in · 3,510 mm | +9% 650 (a) |
| Width declared | 64.6 in · 1,640 mm | 66.1 in · 1,678 mm | — |
| Ground clearance declared | — | 15.7 in · 400 mm | — |
| Turning radius, braked declared | — | 11.3 ft · 3.43 m | — |
| Fuel tank declared | — | 87.7 qt · 83 L | — |
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.
Bührer OP-17 Standard (A) sources
- Source: Traktorenlexikon, “Bührer OP 17 Standard (A)”
- Source: Traktorenlexikon, “Bührer 455/455A”
Steyr 650 (a) sources
- Source: Traktorenlexikon, “Steyr 650”