The John Deere 9520RX tractor tire size is front 800/70R38 and the rear is 800/70R38.
Front tire800/70R38
Rear tire800/70R38
Front/rear setupSame front and rear tire size
Tire pressure14 PSI, 35 PSI
Rim diameter38 in front/rear
Ballast180 gal
John Deere 9520RX Tire Size Details
Front tire size
800/70R38
Rear tire size
800/70R38
Front/rear setup
Same front and rear tire size
Replacement tire size
Front 650/65R42, Rear 600/70R30
R1 ag tire size
800/70R38, 600/70R30
Tire construction
Metric radial
Section width
800 mm
Aspect ratio
70%
Sidewall height
560 mm
Rim diameter
38 in
Approx overall diameter
about 82.1 in
Tire pressure
14 PSI, 35 PSI
Loaded rear tire ballast / fluid capacity
180 gal
Tire Size Comparison Chart
Front rim diameter comparison
This model
38 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 9520RX Extra Tire Notes
Tire size note
The John Deere 9520RX uses 800/70R38 on both the front and rear in this data, so the same tire-size details apply to both axles: metric radial, 800 mm section width, 70% aspect ratio, 38 in rim, approx 82.1 in overall diameter
Pressure note
For the John Deere 9520RX with front 800/70R38 and rear 800/70R38 tires, the pressure values captured in the answer are 14 PSI, 35 PSI. Tire pressure is load-dependent, so use this as a reference value rather than a universal setting
Ballast note
For the John Deere 9520RX rear 800/70R38 tires, the ballast figure captured in the answer is 180 gal. Liquid ballast capacity can change by tire brand, fill percentage, wheel setup and ballast fluid type
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.
