The John Deere 6506 tractor tire size is front 420/85R28 and the rear is 16.9R24.
Front tire420/85R28
Rear tire16.9R24
Front/rear setupDifferent front and rear tire sizes
Tire pressure14 PSI, 12 PSI
Rim diameter28 in front, 24 in rear
John Deere 6506 Tire Size Details
Front tire size
420/85R28
Rear tire size
16.9R24
Front/rear setup
Different front and rear tire sizes
Original factory tire size
Front 16.9R24, Rear 18.4R38
Replacement tire size
Front 16.9R24, Rear 18.4R38
R1 ag tire size
16.9R24, 18.4R38
Front tire construction
Metric radial
Rear tire construction
Imperial radial
Front section width
420 mm
Rear section width
16.9 in
Front aspect ratio
85%
Front rim diameter
28 in
Rear rim diameter
24 in
Approx front overall diameter
about 56.1 in
Tire pressure
14 PSI, 12 PSI
Tire Size Comparison Chart
Front rim diameter comparison
This model
28 in
Average
14.8 in
Low
6 in
High
28 in
Rear rim diameter comparison
This model
24 in
Average
22.2 in
Low
6 in
High
38 in
John Deere 6506 Extra Tire Notes
Tire size note
The John Deere 6506 uses different front and rear tire sizes in this data: front 420/85R28 (28 in rim, 420 mm width) and rear 16.9R24 (24 in rim, 16.9 in width)
Pressure note
For the John Deere 6506 with front 420/85R28 and rear 16.9R24 tires, the pressure values captured in the answer are 14 PSI, 12 PSI. Tire pressure is load-dependent, so use this as a reference value rather than a universal setting
Official information note
Mistakes do happen. Tire sizes can change by year, axle, wheel/rim option, tyre brand, tread type and local market. Please check the tire sidewall, operator manual and official deere.com website for official information.
