Bührer GM-29 Super-Six (A) or Steyr 90?
Which should you choose?
On performance, every comparable figure that differs favours the Steyr 90: hydraulic flow and three-point lift. It is also ahead on top speed and PTO speeds. On features, the Bührer GM-29 Super-Six (A) is ahead on PTO independence.
- The Steyr 90 suits loader and hydraulic implement work better on this data: 79% (14.8 L/min / 3.9 gpm) more hydraulic flow and 18% (450 kg / 992 lb) more three-point lift.
- The Steyr 90 suits road haulage better on this data: 14% (3.0 km/h / 1.9 mph) more top speed.
Generated by rule set compare@4 from the figures on the side-by-side table, allowed by route “the same stated configuration”. Measured figures are compared only with measured, claimed only with claimed, at the same test condition; differences within each figure’s tolerance are not called.
What decides it, question by question?
| Question | GM-29 Super-Six (A) | 90 | Call |
|---|---|---|---|
| Which puts more power through the PTO shaft? | 59.1 kW (79.2 hp)Traktorenlexikon, “Bührer GM 29 SUPER-SIX (A)” | 58.8 kW (78.9 hp)Traktorenlexikon, “Steyr Plus 90” | EvenEven on power at the PTO shaft (both power at the PTO, claimed): the difference is under the 10% threshold for claimed figures, too small to call. |
| Which turns a litre of fuel into more work at the shaft? | — | — | No figureNo call on fuel efficiency at the shaft: no figure on record for the GM-29 Super-Six (A) and the 90. |
| Which pulls harder at the drawbar? | — | — | No figureNo call on drawbar power: no figure on record for the GM-29 Super-Six (A) and the 90. |
| Which pumps more oil for implements? | 18.8 L/min (5.0 gpm)Traktorenlexikon, “Bührer GM 29 SUPER-SIX (A)” | 33.6 L/min (8.9 gpm)Traktorenlexikon, “Steyr Plus 90” | AheadThe Steyr 90 has 79% more hydraulic flow (14.8 L/min / 3.9 gpm) than the Bührer GM-29 Super-Six (A) (both pump flow, as stated by the source). |
| Which lifts more on the three-point hitch? | 2,450 kg (5,401 lb)Traktorenlexikon, “Bührer GM 29 SUPER-SIX (A)” | 2,900 kg (6,393 lb)Traktorenlexikon, “Steyr Plus 90” | AheadThe Steyr 90 has 18% more lift (450 kg / 992 lb) than the Bührer GM-29 Super-Six (A) (both lift at the hitch ends, as stated by the source). |
| Which is heavier, for traction? | 2,810 kg (6,195 lb)Traktorenlexikon, “Bührer GM 29 SUPER-SIX (A)” | 3,430 kg (7,562 lb)Traktorenlexikon, “Steyr Plus 90” | Ahead (a fact, not an advantage)The Steyr 90 is 22% heavier (620 kg / 1,367 lb) than the Bührer GM-29 Super-Six (A) (both unladen weight, as stated by the source). |
| Which may carry more ballast and load? | — | — | No figureNo call on maximum permissible mass: no figure on record for the GM-29 Super-Six (A) and the 90. |
| Which has the wider choice of gears? | 15Traktorenlexikon, “Bührer GM 29 SUPER-SIX (A)” | 12Traktorenlexikon, “Steyr Plus 90” | EvenEven on forward gears (both forward gears, as stated by the source): the difference is under the 25% threshold, too small to call. |
| Which offers a creeper range? | — | — | No figureNo call on a creeper range: not stated for the GM-29 Super-Six (A) and the 90. |
| Which is faster on the road? | 22 km/h (13.7 mph)Traktorenlexikon, “Bührer GM 29 SUPER-SIX (A)” | 25 km/h (15.5 mph)Traktorenlexikon, “Steyr Plus 90” | AheadThe Steyr 90 has 14% more top speed (3.0 km/h / 1.9 mph) than the Bührer GM-29 Super-Six (A) (both top speed forward, as stated by the source). |
| Which offers more PTO speeds? | 540 rpmTraktorenlexikon, “Bührer GM 29 SUPER-SIX (A)” | 540/1000 rpmTraktorenlexikon, “Steyr Plus 90” | AheadThe Steyr 90 offers 1000 rpm at the PTO, which the Bührer GM-29 Super-Six (A) does not (as stated by the sources). |
| Which PTO runs independently of the ground drive? | independentTraktorenlexikon, “Bührer GM 29 SUPER-SIX (A)” | liveTraktorenlexikon, “Steyr Plus 90” | AheadThe Bührer GM-29 Super-Six (A) has an independent PTO; the Steyr 90’s is live. |
| Which drives on both axles? | 2WD / 4WDTraktorenlexikon, “Bührer GM 29 SUPER-SIX (A)” | 2WD / 4WDTraktorenlexikon, “Steyr Plus 90” | EvenEven on drive: every machine is available with four-wheel drive. |
| Which is newer, and what about parts? | 1968–1975 | 1968–1974 | EvenSame era: production began within 5 years of each other. We hold no parts-availability data, so there is no call on parts. |
What does this mean in plain words?
- The Steyr 90 has 79% more hydraulic flow (14.8 L/min / 3.9 gpm) than the Bührer GM-29 Super-Six (A) (both pump flow, as stated by the source).
- The Steyr 90 has 18% more lift (450 kg / 992 lb) than the Bührer GM-29 Super-Six (A) (both lift at the hitch ends, as stated by the source).
- The Steyr 90 is 22% heavier (620 kg / 1,367 lb) than the Bührer GM-29 Super-Six (A) (both unladen weight, as stated by the source).
- The Steyr 90 has 14% more top speed (3.0 km/h / 1.9 mph) than the Bührer GM-29 Super-Six (A) (both top speed forward, as stated by the source).
- The Steyr 90 offers 1000 rpm at the PTO, which the Bührer GM-29 Super-Six (A) does not (as stated by the sources).
- The Bührer GM-29 Super-Six (A) has an independent PTO; the Steyr 90’s is live.
- Even on power at the PTO shaft (both power at the PTO, claimed): the difference is under the 10% threshold for claimed figures, too small to call.
- Even on forward gears (both forward gears, as stated by the source): the difference is under the 25% threshold, too small to call.
- Even on drive: every machine is available with four-wheel drive.
- Same era: production began within 5 years of each other. We hold no parts-availability data, so there is no call on parts.
- No figure on record for every machine, so no call on: fuel efficiency at the shaft, drawbar power, maximum permissible mass and a creeper range.
← Every figure for both machines, side by side, with sources