The John Deere 9520RT 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, 30 PSI
Rim diameter38 in front/rear
John Deere 9520RT 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 600/70R28, Rear 800/70R38
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, 30 PSI
Tire size alternatives / conversions
800/70R38, 900/60R38
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 9520RT Extra Tire Notes
Tire size note
The John Deere 9520RT 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 9520RT with front 800/70R38 and rear 800/70R38 tires, the pressure values captured in the answer are 14 PSI, 30 PSI. Tire pressure is load-dependent, so use this as a reference value rather than a universal setting
Front/rear matching note
The John Deere 9520RT data shows the same tire size front and rear (800/70R38). That usually makes the visible front/rear size relationship simpler, but approved tire and wheel combinations should still be checked before mixing brands or changing sizes
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.
