The John Deere 6140D tractor tire size is front 13.6-24 and the rear is 18.4-34.
Front tire13.6-24
Rear tire18.4-34
Front/rear setupDifferent front and rear tire sizes
Tire pressure24 PSI, 20 PSI
Rim diameter24 in front, 34 in rear
John Deere 6140D Tire Size Details
Front tire size
13.6-24
Rear tire size
18.4-34
Front/rear setup
Different front and rear tire sizes
Original factory tire size
Front 14.9-24, Rear 18.4-34
Replacement tire size
Front 14.9-24, Rear 18.4-34
R1 ag tire size
420/70R24, 480/70R34
Front tire construction
Bias/imperial tire
Rear tire construction
Bias/imperial tire
Front section width
13.6 in
Rear section width
18.4 in
Front rim diameter
24 in
Rear rim diameter
34 in
Tire pressure
24 PSI, 20 PSI
Tire Size Comparison Chart
Front rim diameter comparison
This model
24 in
Average
17.1 in
Low
4 in
High
50 in
Rear rim diameter comparison
This model
34 in
Average
25.5 in
Low
0 in
High
50 in
John Deere 6140D Extra Tire Notes
Tire size note
The John Deere 6140D uses different front and rear tire sizes in this data: front 13.6-24 (24 in rim, 13.6 in width) and rear 18.4-34 (34 in rim, 18.4 in width)
Pressure note
For the John Deere 6140D with front 13.6-24 and rear 18.4-34 tires, the pressure values captured in the answer are 24 PSI, 20 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 6140D data shows front 13.6-24 and rear 18.4-34. 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.
