The John Deere 870 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 pressure24 PSI, 14 PSI
Rim diameter15 in front, 24 in rear
John Deere 870 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 5.00-15, Rear 11.2-24
Replacement tire size
Front 5.00-15, Rear 11.2-24
R1 ag tire size
7-14, 12.4-24, 5.00-15
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
24 PSI, 14 PSI
Tire size alternatives / conversions
25×8.50-14, 25×8.5-14, 320/85R20
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 870 Extra Tire Notes
Tire size note
The John Deere 870 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 870 with front 5.00-15 and rear 12.4-24 tires, the pressure values captured in the answer are 24 PSI, 14 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 870 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.
