The John Deere 1R 25 tractor tire size is front 1R25 and the rear is 1R25.
Front tire1R25
Rear tire1R25
Front/rear setupSame front and rear tire size
Tire pressure35 PSI, 18 PSI
Rim diameter25 in front/rear
John Deere 1R 25 Tire Size Details
Front tire size
1R25
Rear tire size
1R25
Front/rear setup
Same front and rear tire size
Original factory tire size
Front 1R25, Rear 26×12-12
Replacement tire size
Front 23×8.50-12, Rear 12-16.5
R1 ag tire size
1R25, 23×8.50-12, 12-16.5
Tire construction
Imperial radial
Section width
1 in
Rim diameter
25 in
Tire pressure
35 PSI, 18 PSI
Tire size alternatives / conversions
1R25, 23×8.50-12, 31×12.50-15
Tire Size Comparison Chart
Front rim diameter comparison
This model
25 in
Average
17.1 in
Low
4 in
High
50 in
Rear rim diameter comparison
This model
25 in
Average
25.5 in
Low
0 in
High
50 in
John Deere 1R 25 Extra Tire Notes
Tire size note
The John Deere 1R 25 uses 1R25 on both the front and rear in this data, so the same tire-size details apply to both axles: imperial radial, 1 in section width, 25 in rim
Pressure note
For the John Deere 1R 25 with front 1R25 and rear 1R25 tires, the pressure values captured in the answer are 35 PSI, 18 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 1R 25 data shows the same tire size front and rear (1R25). 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.
