Compare/John Deere 6405 vs John Deere Q-85

John Deere 6405 vs John Deere Q-85

Verdict: John Deere 6405 vs John Deere Q-85

The John Deere 6405 and the John Deere Q-85 are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 85 hp. John Deere Q-85 is the lighter machine (2,219 kg vs 7,695 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. John Deere Q-85 is the newer design (2002 vs 1998). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.

Tune the fit score

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

85 hp

Confidence

98%

Guide price

—

Overview

Manufacturer

John DeereReference

GoldiniReference

Four gears (1-4) in four ranges (A-D) with left-hand reverser lever. Power shuttle allows direction changes without using the clutch.Reference

liquid-cooledReference

Distributor

—

John DeereReference

Variants

6405

Advantage seriesReference

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6410

TEN seriesReference

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Engine

Fuel tank

116.2 LReference

—

Displacement

4.5 LReference

2.8 LReference

Bore/Stroke

106 x 127 mmReference

94 x 100 mmReference

Air cleaner

dry dual elementReference

—

Compression

17.8:1Reference

—

Rated RPM

2300Reference

2600Reference

Idle RPM

875-2510Reference

—

Operating RPM

1000-2300Reference

—

Torque

432.6 NmReference

290.0 NmReference

Torque RPM

1400Reference

Firing order

1-3-4-2Reference

—

Starter volts

12Reference

Starter power

3.0 kWReference

—

Oil capacity

51.9 LReference

—

ROPS Coolant capacity

11.0 LReference

—

Cab Coolant capacity

13.5 LReference

—

Intake valve clearance

0.457 mmReference

—

Exhaust valve clearance

0.457 mmReference

—

Engine (gross)

—

63.4 kWReference

Rated Power (gross)

—

63.4 kWReference

Starter

—

electricReference

Transmission

John Deere SyncroVantage Power ReverserReference

—

Gears

16 forward and reverseReference

8 forward and reverseReference

Clutch

—

280mm mechanical dry discReference

PTO & Hydraulics

PTO (claimed)

63.4 kWReference

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Type

power shuttleReference

open centerReference

Pressure

172.4 barReference

—

Valves

2 to 4Reference

—

Total flow

66.2 lpmReference

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Rear Type

IIReference

II/IReference

Control

position control with optional draft controlReference

—

Rear lift

2280 kgReference

—

Rear PTO

independentReference

—

Rear PTO Type

540/1000 (1.375)Reference

540/540EReference

Engine RPM

1000@2208Reference

—

Pump flow

—

39.0 lpmReference

Rear lift (at ends)

—

2500 kgReference

Dimensions

Wheelbase

240 cmReference

184 cmReference

Weight

7695 to 8987 poundsReference

2219 kgReference

Front tire

10.00-16Reference

280/70-20Reference

Rear tire

18.4-34 (2WD)Reference

320/70-24Reference

Standard tires (ag)

Front: 13.6-38. Rear: 13.6-46 (High Clearance)Reference

Front: 280/70-20. Rear: 320/70-24Reference

Length

413 cmReference

328 cmReference

Rear tread

151/161/171/181/191 cmReference

—

2WD ROPS Shipping

3490 kgReference

—

4WD ROPS Shipping

3687 kgReference

—

2WD cab Shipping

3891 kgReference

—

4WD cab Shipping

4076 kgReference

—

2WD Max Drawbar

1399 kgReference

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4WD Max Drawbar

800 kgReference

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Max rear axle

5599 kgReference

—

Steering wheel

182 cmReference

—

Height

—

215 cmReference

6405 Serial Numbers

1998

206000Reference

—

1999

233700Reference

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2000

260600Reference

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2001

322099Reference

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Location:

Serial number plate on the right side of the tractor frame, above the front axle.Reference

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Electrical

Ground

negativeReference

Charging system

alternatorReference

Charging amps

90Reference

55Reference

Battery CCA

830Reference

—

Battery volts

12Reference

Capacities

Max capacity

6999 kgReference

—

John Deere 6405 Height

ROPS

280 cmReference

—

Exhaust

246 cmReference

—

Speeds

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.