The John Deere 40R tractor tire size is front 5.00-15 and the rear is 12.4-24.
Front tire5.00-15
Rear tire12.4-24
Front/rear setupDifferent front and rear tire sizes
Tire pressure12 PSI, 44 PSI
Rim diameter15 in front, 24 in rear
John Deere 40R Tire Size Details
Front tire size
5.00-15
Rear tire size
12.4-24
Front/rear setup
Different front and rear tire sizes
Original factory tire size
Front 7.5-16, Rear 12.4-24
Replacement tire size
Front 5.00-15, Rear 9-24
R1 ag tire size
12.4-24, 8-16
Front tire construction
Bias/imperial tire
Rear tire construction
Bias/imperial tire
Front section width
5 in
Rear section width
12.4 in
Front rim diameter
15 in
Rear rim diameter
24 in
Tire pressure
12 PSI, 44 PSI
Tire Size Comparison Chart
Front rim diameter comparison
This model
15 in
Average
17.1 in
Low
4 in
High
50 in
Rear rim diameter comparison
This model
24 in
Average
25.5 in
Low
0 in
High
50 in
John Deere 40R Extra Tire Notes
Tire size note
The John Deere 40R uses different front and rear tire sizes in this data: front 5.00-15 (15 in rim, 5 in width) and rear 12.4-24 (24 in rim, 12.4 in width)
Pressure note
For the John Deere 40R with front 5.00-15 and rear 12.4-24 tires, the pressure values captured in the answer are 12 PSI, 44 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 40R data shows front 5.00-15 and rear 12.4-24. 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.
