Compare/John Deere 8R 370 vs John Deere 9R 390

John Deere 8R 370 vs John Deere 9R 390

Verdict: John Deere 8R 370 vs John Deere 9R 390

The John Deere 8R 370 and the John Deere 9R 390 are both tractors — here is how they stack up on the figures that matter. John Deere 9R 390 leads on rated power with 385 hp against 370 hp. John Deere 9R 390 is the lighter machine (20,856 kg vs 27,800 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. John Deere 9R 390 holds more fuel (1514.0 L vs 726.7 L) for longer stints between fills. John Deere 9R 390 is the newer design (2021 vs 2019). In short: choose the John Deere 9R 390 for outright pulling power, or the John Deere 8R 370 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

John Deere

Fit score

Best match

Clear

John Deere

Fit score

Best match

Clear

Rated power

370 hp

385 hp

Confidence

98%

Guide price

—

Overview

Manufacturer

John DeereReference

With Group 48 tires.Reference

With group 48 tires.Reference

Final drives

inboard planetaryReference

Differential lock

—

electro-hydraulic front and rearReference

Variants

8R 370

wheeledReference

—

8RT 370

two-trackReference

—

8RX 370

four-trackReference

—

Engine

Fuel tank

726.7 LReference

1514.0 LReference

Exhaust fluid (DEF)

37.1 LReference

120.0 LReference

Engine (gross)

275.9 kWReference

287.0 kWReference

Engine (max)

303.5 kWReference

316.0 kWReference

Drawbar (tested)

212.4 kWReference

—

Displacement

9.0 LReference

13.6 LReference

Bore/Stroke

118 x 136 mmReference

132 x 165 mmReference

Emissions

Tier IVReference

Rated Power (gross)

275.9 kWReference

287.0 kWReference

Maximum Power (gross)

303.5 kWReference

316.0 kWReference

Fuel system

electronic high-pressure common railReference

Compression

16.0:1Reference

15.9:1Reference

Rated RPM

2100Reference

Starter

electricReference

Starter volts

12Reference

Max power

212.4 kWReference

—

Power at rated engine speed

242.4 kWReference

—

Fuel Type

DieselReference

Emissions compliance

Final Tier 4Reference

Final Tier 4 (FT4)Reference

Engine torque at rated speed

Option 1: 2,100 rpm\\nOption 2: 1,732 NmReference

Option 1: 2,100 rpm\\nOption 2: 1,800 NmReference

Interval for engine oil change

500 hoursReference

Interval for engine coolant change

6,000 hoursReference

Cooling system

42.3 LReference

56.5 LReference

Air cleaner

—

dryReference

Torque

—

1800.8 NmReference

Torque RPM

—

1550Reference

Oil capacity

—

64.0 LReference

Oil change

—

500 hReference

Coolant capacity

—

56.5 LReference

No of Cylinders

—

6Reference

Transmission

e23Reference

e18Reference

Gears

infinite forward and reverseReference

18 forward and 6 reverseReference

Transmission Type

PowershiftReference

Wheel Drive

MFWDReference

4WDReference

Rear Axle Drive Type

Inboard planetary three pinionReference

Inboard planetary with double-reduction axleReference

Interval for hydraulic/transmission oil change

1,500 hoursReference

PTO & Hydraulics

PTO (claimed)

231.2 kWReference

249.8 kWReference

PTO (tested)

276.8 kWReference

—

Type

infinitely variable transmissionReference

full power shiftReference

Pressure

204.0 barReference

200.0 barReference

Rear valves

4 to 6Reference

—

Pump flow

317.9 lpmReference

416.4 lpmReference

SCV flow

132.5 lpmReference

159.0 lpmReference

Rear Type

IVN/IIIReference

IVN/IVReference

Control

electro-hydraulic draft sensingReference

—

Rear lift (at 24"/610mm)

6894 kgReference

9072 kgReference

Front Hitch

IIINReference

—

Front lift (at ends)

5200 kgReference

—

Rear PTO

independentReference

Clutch

electro-hydraulic wet discReference

—

Rear PTO Type

1000 (1.75)Reference

Engine RPM

1000@2000Reference

—

Front PTO

independentReference

—

Front PTO Type

1000 (1.375)Reference

—

Power at rated PTO speed

264.3 kWReference

—

Valves

—

4 to 8Reference

Dimensions

Wheelbase

305 cmReference

391 cmReference

Weight

12610 kgReference

20856 kgReference

Front tire

420/85R34Reference

710/70R42Reference

Rear tire

480/80R50Reference

710/70R42Reference

Standard tires (ag)

Front: 420/85R34. Rear: 480/80R50Reference

—

Length

642 cmReference

794 cmReference

Height (cab)

350 cmReference

374 cmReference

Operating weight

13154 kgReference

—

Clearance (rear axle)

80 cmReference

—

Rear axle

119 by 3009 mmReference

119 by 3048 mmReference

Front tread

152 to 365 cmReference

—

Ag front

—

710/70R42Reference

Ag rear

—

710/70R42Reference

Width

—

440 cmReference

Height (exhaust)

—

373 cmReference

Shipping weight

—

20856 kgReference

Max weight

—

28123 kgReference

Front axle

—

119 by 3048 mmReference

Electrical

Ground

negativeReference

Charging system

alternatorReference

Charging amps

330Reference

Batteries

2Reference

3Reference

Battery CCA

925Reference

—

Battery volts

12Reference

Battery Group

31Reference

—

Alternator size

200 ampReference

250 ampReference

Battery options

12 VReference

Total cold cranking amps

1,850 CCAReference

3 x 925 CCA\\nTotal: 2,775 CCAReference

Test results

Fuel use

69.3 l/hourReference

—

Max pull

12781 kgReference

—

Speeds

General

Make & Model

MJDXL09.0,333Reference

MJDXL13.5,334Reference

SCV control

ElectronicReference

Drawbar category

Category 4/Category 4 with heavy-duty supportReference

Category 4 or Category 5Reference

Drawbar Maximum vertical load

4,050 to 6,000 lbReference

5,443.1 kgReference

Front Axle Type

Standard: ILS\\nOptional: 1,500 Series MFWDReference

Diameter: 120 x 3,048 mm\\n4.72 x 120 in.Reference

Display

Standard: 4,600 Generation 4 CommandCenter™: 25.4 cm\\n10 in.Reference

—

Country of manufacturer

USAReference

Working lights

Standard: 18 halogen\\nAvailable: 18 LED\\n22 LEDReference

—

Type of headlight bulb

Standard: halogen, 65 W\\nAvailable: LEDReference

Standard: halogen, 65 W\\nOptional: LEDReference

Rear Axle Type

—

Diameter: 120 x 3,048 mm\\n4.72 x 120 in.Reference

Rear Axle Differential Lock

—

Full-locking electrohydraulicReference

Front Axle Differential Lock

—

Full-locking electrohydraulicReference

Capacities

Capacity

549 cu. in.Reference

827 cu. in.Reference

Diesel exhaust fluid (DEF) tank

37.2 LReference

120 LReference

Crankcase oil volume

7.3 U.S. galReference

16.9 U.S. galReference

Power

Rated Power

370 hpReference

390 hpReference

Power boost

10 percentReference

Max Power

—

429 hpReference

PTO

PTO Power

310 hpReference

335 hpReference

PTO torque rise

40 percentReference

38 percentReference

Rear PTO Power

AvailableReference

Rear PTO Control

Electrohydraulic with adjustable modulationReference

ElectrohydraulicReference

Front PTO Power

AvailableReference

—

Engine Speed on Front PTO speed

2,000 engine rpmReference

—

Rear PTO RPM

—

1,000 rpmReference

Hydraulics

Pump Rated Output (total)

318 l/minReference

416 l/minReference

Remote Valves

6Reference

4Reference

Number of rear selective control valves (SCVs)

6Reference

—

Rear Hitch category (SAE designation)

4N/3 at 610 mmReference

4NReference

Rear Hitch Sensing Type

ElectrohydraulicReference

Electrohydraulic with draft sensingReference

Front Hitch category (SAE designation)

Category 3NReference

—

Front Hitch lift capacity beyond lift points

Category 3N ground-engaging front hitch: 5,200 kg\\n11,464 lbReference

—

Rear Hitch maximum lift capacity

—

15,000Reference

Dimensions & weight

Drawbar clearance

376 mmReference

527 mmReference

Turning radius

5.7 mReference

6.1 mReference

Overall weight

12,700.6 kgReference

20,856.2 kgReference

Operator station

Cab Availability

AvailableReference

Cab glass area

70.18 sq ftReference

71.47 sq ftReference

Cab space

114 cu ftReference

115 cu ftReference

Cab Seat Type

ActiveSeat™ IIReference

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.