9 material differences · fewer than 12
Tractor oneBührer Komfort 475 (A)1975–1978No measured PTO figureTractor twoBührer PF-21 Super (A)1968–1974No measured PTO figure
Which should you choose?
We will not advise between these two machines, because they were not built in overlapping years (1975–1978; 1968–1974). 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
9 material differences · 4 fields identical or within 5%, which is not counted as material
| Field | Komfort 475 (A) | PF-21 Super (A) | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 69.1 hp | 66.1 hp | — |
| Engine declared | Perkins A 4.248 | FORD (GB) 2.514 E | differs |
| Displacement declared | 4.07 L | 4.18 L | — |
| Maximum torque declared | 195 lb·ft · 265 N·m | 183 lb·ft · 248 N·m | +7% Komfort 475 (A) |
| Transmission | |||
| Top speed declared | 15.5 mph · 25 km/h | 15.5 mph · 25 km/h | — |
| Clutch declared | — | Pedal-operated dry Buhrer double disc clutch between gearbox and group transmission | — |
| Hydraulics & hitch | |||
| Pump flow declared | 6.3 gpm · 23.7 L/min | 5.2 gpm · 19.5 L/min | +22% Komfort 475 (A) |
| Rear PTO speeds declared | 540/800 rpm | 540/770 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 6,173 lb · 2,800 kg | 5,357 lb · 2,430 kg | +15% Komfort 475 (A) |
| Wheelbase declared | 84.7 in · 2,152 mm | 84.3 in · 2,140 mm | — |
| Length declared | 143.7 in · 3,650 mm | 129.5 in · 3,290 mm | +11% Komfort 475 (A) |
| Width declared | 75.6 in · 1,920 mm | 69.3 in · 1,760 mm | +9% Komfort 475 (A) |
| Ground clearance declared | 16.5 in · 420 mm | 15.0 in · 380 mm | +11% Komfort 475 (A) |
| Turning radius, braked declared | 11.7 ft · 3.56 m | 10.9 ft · 3.33 m | +7% Komfort 475 (A) |
| Fuel tank declared | 67.6 qt · 64.0 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 Komfort 475 (A) sources
- Source: Traktorenlexikon, “Bührer 475/475A”
- Source: Traktorenlexikon, “Massey Ferguson MF 178”
Bührer PF-21 Super (A) sources
- Source: Traktorenlexikon, “Bührer PF 21 Super(A)”