The Kubota ZD221 tractor tire size is front 13×5.0-6 and rear 23×10.50-12. Other tire setup data found for this model includes Front 13×5.0-6, Rear 23×10.5-12; Front 15×6.0-6, Rear 26×12.0-12; Front 24×12.00-12, Rear 23×10.50-12, so confirm the wheel option before ordering.
Front tire13×5.0-6
Rear tire23×10.50-12
Front/rear setupDifferent front and rear tire sizes
Tire pressure22 PSI, 20 PSI
Rim diameter6 in front, 12 in rear
Ballast35 gal
Other setup foundFront 13×5.0-6, Rear 23×10.5-12; Front 15×6.0-6, Rear 26×12.0-12; Front 24×12.00-12, Rear 23×10.50-12
Kubota ZD221 Tire Size Details
Front tire size
13×5.0-6
Rear tire size
23×10.50-12
Front/rear setup
Different front and rear tire sizes
Other tire setup found
Front 13×5.0-6, Rear 23×10.5-12
Replacement tire size
Front 15×6.0-6, Rear 26×12.0-12
R1 ag tire size
Front 24×12.00-12, Rear 23×10.50-12
Front tire construction
Flotation/implement tire
Rear tire construction
Flotation/implement tire
Front section width
5 in
Rear section width
10.5 in
Front rim diameter
6 in
Rear rim diameter
12 in
Approx front overall diameter
about 13 in
Approx rear overall diameter
about 23 in
Tire pressure
22 PSI, 20 PSI
Loaded rear tire ballast / fluid capacity
35 gal
Tire Size Comparison Chart
Front rim diameter comparison
This model
6 in
Average
7 in
Low
6 in
High
10 in
Rear rim diameter comparison
This model
12 in
Average
10 in
Low
8 in
High
12 in
Benchmarks use typical low, average and high rim diameters for the lawn/garden tractor category, not scraped low/high outliers.
Kubota ZD221 Extra Tire Notes
Tire size note
The Kubota ZD221 uses different front and rear tire sizes in this data: front 13×5.0-6 (6 in rim, 5 in width) and rear 23×10.50-12 (12 in rim, 10.5 in width)
Multiple setup note
This data has more than one tire setup for the Kubota ZD221. The main front/rear listing is Front 13×5.0-6, Rear 23×10.50-12. Other setup data found: Front 13×5.0-6, Rear 23×10.5-12; Front 15×6.0-6, Rear 26×12.0-12; Front 24×12.00-12, Rear 23×10.50-12. This usually means different wheel, axle, turf/ag/industrial, or market options rather than one universal tire size
Pressure note
For the Kubota ZD221 with front 13×5.0-6 and rear 23×10.50-12 tires, the pressure values captured in the answer are 22 PSI, 20 PSI. Tire pressure is load-dependent, so use this as a reference value rather than a universal setting
Ballast note
For the Kubota ZD221 rear 23×10.50-12 tires, the ballast figure captured in the answer is 35 gal. Liquid ballast capacity can change by tire brand, fill percentage, wheel setup and ballast fluid type
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 kubotausa.com website for official information.
