13 material differences
Tractor oneJohn Deere 79302007–2011No measured PTO figureTractor twoJohn Deere 8220 T2002–2005No measured PTO figure
Which should you choose?
We will not advise between these two machines, because their unladen weight differs by more than 25% (44%); the drive differs (4WD; Tracks); they were not built in overlapping years (2007–2011; 2002–2005); the 8220 T is on tracks, not an alternative to an ordinary tractor. 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
13 material differences · 4 fields identical or within 5%, which is not counted as material
| Field | 7930 | 8220 T | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 217.1 hp | 222.1 hp | — |
| Engine declared | John Deere PowrTech-Plus 6.068 HRW-65/V4-CR | John Deere-PowerTech 6.081 HRW-21 | differs |
| Displacement declared | 6.78 L | 8.13 L | +20% 8220 T |
| Maximum torque declared | 653 lb·ft · 885 N·m | 707 lb·ft · 958 N·m | +8% 8220 T |
| Transmission | |||
| Top speed declared | 18.6–31.1 mph · 30–50 km/h | 18.6 mph · 30 km/h | differs |
| Clutch declared | Pedal-operated hydraulic wet multi-plate clutch | Pedal operated hydraulic wet John Deere multi-disc clutch | differs |
| Hydraulics & hitch | |||
| Hydraulic centre declared | Closed centre | — | — |
| Hydraulic control declared | Load sensing | Load sensing | — |
| Pump flow declared | 32.0 gpm · 121.1 L/min | 34.6 gpm · 131.0 L/min | +8% 8220 T |
| Pressure declared | — | 3,379 psi · 233 bar | — |
| Rear PTO speeds declared | 540/1000 rpm | 1000 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 17,730 lb · 8,042 kg | 25,507 lb · 11,570 kg | +44% 8220 T |
| Maximum permissible mass declared | 28,881 lb · 13,100 kg | 31,500 lb · 14,288 kg | +9% 8220 T |
| Wheelbase declared | 112.6 in · 2,860 mm | 89.0 in · 2,260 mm | +27% 7930 |
| Length declared | 212.4 in · 5,394 mm | 217.7 in · 5,530 mm | — |
| Width declared | 86.9–110.5 in · 2,208–2,807 mm | 103.7–144.0 in · 2,634–3,657 mm | differs |
| Height, over the cab declared | 120.9 in · 3,072 mm | 122.9 in · 3,122 mm | — |
| Ground clearance declared | 27.2 in · 690 mm | 13.8 in · 350 mm | +97% 7930 |
| Fuel tank declared | 378.3–414.2 qt · 358.0–392.0 L | 519.9 qt · 492.0 L | differs |
John Deere 7930 sources
Source
- Source: Traktorenlexikon, “John Deere 7930”
- Source: OECD test report 2408, 2008
John Deere 8220 T sources
Source
- Source: Traktorenlexikon, “John Deere 8220T”
- Source: Traktorenlexikon, “John Deere 8120T”