The John Deere 3400 tractor tire size is front 24×8.50-12 and the rear is 12.4-28.
Front tire24×8.50-12
Rear tire12.4-28
Front/rear setupDifferent front and rear tire sizes
Tire pressure14 PSI, 35 PSI
Rim diameter12 in front, 28 in rear
John Deere 3400 Tire Size Details
Front tire size
24×8.50-12
Rear tire size
12.4-28
Front/rear setup
Different front and rear tire sizes
Original factory tire size
Front 24×8.50-12, Rear 12.4-24
Replacement tire size
Front 11.2-24, Rear 7.2-16
R1 ag tire size
11.2-24, 7.2-16
Front tire construction
Flotation/implement tire
Rear tire construction
Bias/imperial tire
Front section width
8.5 in
Rear section width
12.4 in
Front rim diameter
12 in
Rear rim diameter
28 in
Approx front overall diameter
about 24 in
Tire pressure
14 PSI, 35 PSI
Tire size alternatives / conversions
12.4-24, 6.0-16
Tire Size Comparison Chart
Front rim diameter comparison
This model
12 in
Average
17.1 in
Low
4 in
High
50 in
Rear rim diameter comparison
This model
28 in
Average
25.5 in
Low
0 in
High
50 in
John Deere 3400 Extra Tire Notes
Tire size note
The John Deere 3400 uses different front and rear tire sizes in this data: front 24×8.50-12 (12 in rim, 8.5 in width) and rear 12.4-28 (28 in rim, 12.4 in width)
Pressure note
For the John Deere 3400 with front 24×8.50-12 and rear 12.4-28 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
Front/rear matching note
The John Deere 3400 data shows front 24×8.50-12 and rear 12.4-28. 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.
