The John Deere Z840A tractor tire size is front 13×6.5-6 and the rear is 13×6.50-6.
Front tire13×6.5-6
Rear tire13×6.50-6
Front/rear setupDifferent front and rear tire sizes
Tire pressure10 PSI, 8 PSI
Rim diameter6 in front/rear
John Deere Z840A Tire Size Details
Front tire size
13×6.5-6
Rear tire size
13×6.50-6
Front/rear setup
Different front and rear tire sizes
Original factory tire size
Front 13×6.5-6, Rear 24×12-12
R1 ag tire size
13×6.5-6, 24×12-12
Front tire construction
Flotation/implement tire
Rear tire construction
Flotation/implement tire
Front section width
6.5 in
Rear section width
6.5 in
Front rim diameter
6 in
Rear rim diameter
6 in
Approx front overall diameter
about 13 in
Approx rear overall diameter
about 13 in
Tire pressure
10 PSI, 8 PSI
Tire size alternatives / conversions
10.00-16, 18.4-38
Tire Size Comparison Chart
Front rim diameter comparison
This model
6 in
Average
14.8 in
Low
6 in
High
28 in
Rear rim diameter comparison
This model
6 in
Average
22.2 in
Low
6 in
High
38 in
John Deere Z840A Extra Tire Notes
Tire size note
The John Deere Z840A uses different front and rear tire sizes in this data: front 13×6.5-6 (6 in rim, 6.5 in width) and rear 13×6.50-6 (6 in rim, 6.5 in width)
Pressure note
For the John Deere Z840A with front 13×6.5-6 and rear 13×6.50-6 tires, the pressure values captured in the answer are 10 PSI, 8 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 Z840A data shows front 13×6.5-6 and rear 13×6.50-6. 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.
