The Allis Chalmers 8550 tractor weighs 27,040 lb (12,265 kg) using its published Operating weight. Other useful published figures are 26,400 lb (Shipping — duals) and 29,360 lb (Ballasted). That places it around the 64th percentile among tractors in the dataset, on the heavier side of its peer group.
The published Allis Chalmers 8550 weight is 26,400–29,360 lb (11,975–13,317 kg). The primary figure used for comparisons is 27,040 lb (12,265 kg), listed as Operating. The published configurations span 2,960 lb, a 11.2% difference from the lightest listed setup.
Tractor-weight benchmark
How this weight compares
All tractors in this dataset · 2,282 tractors in the benchmark.
Representative published weight
Very heavy
27,040 lb
Low1,984 lb
This model27,040 lb
Average9,927 lb
High21,767 lb
Low and high use the 10th and 90th percentiles of the peer group, which keeps one unusually light or heavy tractor from distorting the scale. Average is the peer-group mean.
At a glance
Tractor profile
Published weight26,400–29,360 lb (11,975–13,317 kg)
Overall weight bandExtra heavy
Tractor typeFarm tractor
Primary horsepower300 hp / 223.7 kW
Max length285 in (723 cm)
Max width95.5 in (242 cm)
Overview
Model information
Manufacturer
Allis Chalmers
Model
8550
Category
Farm tractor
Model years
1978 – 1981
Tractor type
Farm tractor
Published weight variants
3
Published configurations
Weight variants
Shipping, operating, ballasted and drivetrain/configuration weights are kept separate when the source publishes them separately.
Weight type
Configuration
Weight
Metric
US tons
Variant / note
Shipping
duals
26,400 lb
11,975 kg
13.2
—
Operating
—
27,040 lb
12,265 kg
13.52
—
Ballasted
—
29,360 lb
13,317 kg
14.68
—
Configuration effect
How configuration changes the weight
2,960 lbLightest to heaviest · 11.2% spread across published variants
+640 lbShipping to operating · 2.4% increase
+2,960 lbBase to ballasted · 11.2% increase
Dimensions, power & hauling
Technical details
Dimensions
Wheelbase126 in (320 cm)
Length285 in (723 cm)
Width95.5 in (242 cm)
Height154 in (391 cm)
Ground clearance17 in (43 cm)
Power & weight ratios
Primary power300 hp (223.7 kW)
Power basisEngine
Weight per horsepower90.1 lb/hp
Weight per foot of length1,138.5 lb/ft
Wheelbase / length44.2%
Transport snapshot
Primary published weight27,040 lb (12,265 kg)
Maximum published weight29,360 lb (13,317 kg)
Maximum US-ton equivalent14.68 US tons
Maximum published width95.5 in (242 cm)
Published width over 102 inNo
Weight context
Weight range26,400–29,360 lb (11,975–13,317 kg)
Primary weight basisOperating
Peer positionVery heavy among All tractors in this dataset · 92nd percentile
Physical size classLarge
For transport planning, the representative published tractor weight is about 27,040 lb (13.52 US tons); published configurations reach 29,360 lb (14.68 US tons); the widest published tractor dimension is 95.5 in (8 ft). Actual transport weight and dimensions can increase with fuel, ballast, a loader, implements, tires and other installed equipment.
Nearby benchmarks
Tractors with similar weight
Useful reference points from the same dataset.
Closest by published weight
Case IH Magnum 235 (27180 lb)
Case IH Magnum 260 (27180 lb)
John Deere 7260R (27180 lb)
John Deere 7270R (27180 lb)
John Deere 7280R (27180 lb)
Closest comparable tractors
Case IH Magnum 235 (27180 lb)
Case IH Magnum 260 (27180 lb)
Case IH Magnum 290 (27400 lb)
John Deere 8520T (27280 lb, 305 hp)
John Deere WA-14 (26520 lb)
Common questions
Allis Chalmers 8550 weight FAQ
How much does an Allis Chalmers 8550 weigh?
The Allis Chalmers 8550 weighs 27,040 lb (12,265 kg) using the published Operating figure. Across the published configurations on this page, weight ranges from 26,400 to 29,360 lb (11,975 to 13,317 kg).
What is the operating weight of the Allis Chalmers 8550 compared with shipping weight?
Published operating weight is 27,040 lb (12,265 kg), versus 26,400 lb (11,975 kg) for shipping weight. That is roughly 640 lb (2.4%) more than shipping weight. Operating weight is generally the more useful starting point when estimating a ready-to-use tractor.
How much does the Allis Chalmers 8550 weigh with ballast?
The published ballasted weight is 29,360 lb (13,317 kg). That is up to 2,960 lb (11.2%) above the lightest published configuration. Ballast can therefore change the practical hauling and ground-pressure picture substantially on this model.
Is the Allis Chalmers 8550 a heavy farm tractor?
Yes. The representative figure sits at about the 92nd percentile, heavier than roughly 92% of the all tractors in this dataset. That puts it in the very heavy range for this comparison. It is 17,113 lb heavier than the peer-group average of 9,927 lb.
How wide is the Allis Chalmers 8550 for transport?
The maximum published tractor width is 95.5 in (8 ft). That is 6.5 in under 8.5 ft before allowing for a loader, duals, implements or other equipment that may increase transport width.
Does the Allis Chalmers 8550 weigh more than 10,000 lb?
Yes. The representative published weight is 27,040 lb, and the heaviest published configuration on this page is 29,360 lb (14.68 US tons). Any trailer calculation also needs the trailer itself plus fuel, ballast, attachments and other equipment.
