The John Deere S180 tractor tire size is front 15×6.5-8 and the rear is 22×9.5-12.
Front tire15×6.5-8
Rear tire22×9.5-12
Front/rear setupDifferent front and rear tire sizes
Tire pressure14 PSI, 10 PSI
Rim diameter8 in front, 12 in rear
Ballast12 gal
John Deere S180 Tire Size Details
Front tire size
15×6.5-8
Rear tire size
22×9.5-12
Front/rear setup
Different front and rear tire sizes
Replacement tire size
Front 20×10.00-8, Rear 15×6.00-6
Front tire construction
Flotation/implement tire
Rear tire construction
Flotation/implement tire
Front section width
6.5 in
Rear section width
9.5 in
Front rim diameter
8 in
Rear rim diameter
12 in
Approx front overall diameter
about 15 in
Approx rear overall diameter
about 22 in
Tire pressure
14 PSI, 10 PSI
Loaded rear tire ballast / fluid capacity
12 gal
Tire size alternatives / conversions
20×8-10, 20×10-8
Tire Size Comparison Chart
Front rim diameter comparison
This model
8 in
Average
17.1 in
Low
4 in
High
50 in
Rear rim diameter comparison
This model
12 in
Average
25.5 in
Low
0 in
High
50 in
John Deere S180 Extra Tire Notes
Tire size note
The John Deere S180 uses different front and rear tire sizes in this data: front 15×6.5-8 (8 in rim, 6.5 in width) and rear 22×9.5-12 (12 in rim, 9.5 in width)
Pressure note
For the John Deere S180 with front 15×6.5-8 and rear 22×9.5-12 tires, the pressure values captured in the answer are 14 PSI, 10 PSI. Tire pressure is load-dependent, so use this as a reference value rather than a universal setting
Ballast note
For the John Deere S180 rear 22×9.5-12 tires, the ballast figure captured in the answer is 12 gal. Liquid ballast capacity can change by tire brand, fill percentage, wheel setup and ballast fluid type
Front/rear matching note
The John Deere S180 data shows front 15×6.5-8 and rear 22×9.5-12. 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.
