The John Deere F1145 tractor tire size is front 23×10.50-12 and the rear is 18×8.5-8.
Front tire23×10.50-12
Rear tire18×8.5-8
Front/rear setupDifferent front and rear tire sizes
Tire pressure24 PSI, 12 PSI
Rim diameter12 in front, 8 in rear
John Deere F1145 Tire Size Details
Front tire size
23×10.50-12
Rear tire size
18×8.5-8
Front/rear setup
Different front and rear tire sizes
Front tire construction
Flotation/implement tire
Rear tire construction
Flotation/implement tire
Front section width
10.5 in
Rear section width
8.5 in
Front rim diameter
12 in
Rear rim diameter
8 in
Approx front overall diameter
about 23 in
Approx rear overall diameter
about 18 in
Tire pressure
24 PSI, 12 PSI
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
8 in
Average
25.5 in
Low
0 in
High
50 in
John Deere F1145 Extra Tire Notes
Tire size note
The John Deere F1145 uses different front and rear tire sizes in this data: front 23×10.50-12 (12 in rim, 10.5 in width) and rear 18×8.5-8 (8 in rim, 8.5 in width)
Pressure note
For the John Deere F1145 with front 23×10.50-12 and rear 18×8.5-8 tires, the pressure values captured in the answer are 24 PSI, 12 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 F1145 data shows front 23×10.50-12 and rear 18×8.5-8. 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.
