The John Deere 6120 tractor tire size is front 10.00-16 and the rear is 460/85R38.
Front tire10.00-16
Rear tire460/85R38
Front/rear setupDifferent front and rear tire sizes
Tire pressure30 PSI, 25 PSI
Rim diameter16 in front, 38 in rear
Ballast150 gal
John Deere 6120 Tire Size Details
Front tire size
10.00-16
Rear tire size
460/85R38
Front/rear setup
Different front and rear tire sizes
Original factory tire size
Front 540/65R24, Rear 600/65R38
Replacement tire size
Front 10.00-16, Rear 16.9-30
R1 ag tire size
12.4-24, 16.9-30
Front tire construction
Bias/imperial tire
Rear tire construction
Metric radial
Front section width
10 in
Rear section width
460 mm
Rear aspect ratio
85%
Front rim diameter
16 in
Rear rim diameter
38 in
Approx rear overall diameter
about 68.8 in
Tire pressure
30 PSI, 25 PSI
Loaded rear tire ballast / fluid capacity
150 gal
Tire size alternatives / conversions
10.00-16, 16.9-30, 12.4-24
Tire Size Comparison Chart
Front rim diameter comparison
This model
16 in
Average
17.1 in
Low
4 in
High
50 in
Rear rim diameter comparison
This model
38 in
Average
25.5 in
Low
0 in
High
50 in
John Deere 6120 Extra Tire Notes
Tire size note
The John Deere 6120 uses different front and rear tire sizes in this data: front 10.00-16 (16 in rim, 10 in width) and rear 460/85R38 (38 in rim, 460 mm width)
Pressure note
For the John Deere 6120 with front 10.00-16 and rear 460/85R38 tires, the pressure values captured in the answer are 30 PSI, 25 PSI. Tire pressure is load-dependent, so use this as a reference value rather than a universal setting
Ballast note
For the John Deere 6120 rear 460/85R38 tires, the ballast figure captured in the answer is 150 gal. Liquid ballast capacity can change by tire brand, fill percentage, wheel setup and ballast fluid type
Front/rear matching note
The John Deere 6120 data shows front 10.00-16 and rear 460/85R38. When changing either size, front/rear rolling circumference and lead/lag need to stay within the correct range
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.
