The John Deere 9430T tractor tire size is front 18.4R42 and the rear is 18.4R38.
Front tire18.4R42
Rear tire18.4R38
Front/rear setupDifferent front and rear tire sizes
Tire pressure12 PSI, 20 PSI
Rim diameter42 in front, 38 in rear
John Deere 9430T Tire Size Details
Front tire size
18.4R42
Rear tire size
18.4R38
Front/rear setup
Different front and rear tire sizes
Replacement tire size
Front 18.4R42, Rear 14.9R30
R1 ag tire size
14.9R24, 18.4R38
Front tire construction
Imperial radial
Rear tire construction
Imperial radial
Front section width
18.4 in
Rear section width
18.4 in
Front rim diameter
42 in
Rear rim diameter
38 in
Tire pressure
12 PSI, 20 PSI
Tire Size Comparison Chart
Front rim diameter comparison
This model
42 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 9430T Extra Tire Notes
Tire size note
The John Deere 9430T uses different front and rear tire sizes in this data: front 18.4R42 (42 in rim, 18.4 in width) and rear 18.4R38 (38 in rim, 18.4 in width)
Pressure note
For the John Deere 9430T with front 18.4R42 and rear 18.4R38 tires, the pressure values captured in the answer are 12 PSI, 20 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.
