The Kubota KT30 tractor tire size is front 23×8.50-14 and rear 12.4-24. Other tire setup data found for this model includes Front 6.00-16, Rear 12.4-24; Front 12.4-16, Rear 23×8.50-12; Front 9.5-24, Rear 6.0-12, so confirm the wheel option before ordering.
Front tire23×8.50-14
Rear tire12.4-24
Front/rear setupDifferent front and rear tire sizes
Tire pressure12 PSI, 14 PSI
Rim diameter14 in front, 24 in rear
Ballast35 gal
Other setup foundFront 6.00-16, Rear 12.4-24; Front 12.4-16, Rear 23×8.50-12; Front 9.5-24, Rear 6.0-12
Kubota KT30 Tire Size Details
Front tire size
23×8.50-14
Rear tire size
12.4-24
Front/rear setup
Different front and rear tire sizes
Other tire setup found
Front 6.00-16, Rear 12.4-24
Replacement tire size
Front 12.4-16, Rear 23×8.50-12
R1 ag tire size
Front 9.5-24, Rear 6.0-12
Front tire construction
Flotation/implement tire
Rear tire construction
Bias/imperial tire
Front section width
8.5 in
Rear section width
12.4 in
Front rim diameter
14 in
Rear rim diameter
24 in
Approx front overall diameter
about 23 in
Tire pressure
12 PSI, 14 PSI
Loaded rear tire ballast / fluid capacity
35 gal
Tire Size Comparison Chart
Front rim diameter comparison
This model
14 in
Average
18 in
Low
12 in
High
28 in
Rear rim diameter comparison
This model
24 in
Average
28 in
Low
18 in
High
38 in
Benchmarks use typical low, average and high rim diameters for the compact / utility tractor category, not scraped low/high outliers.
Kubota KT30 Extra Tire Notes
Tire size note
The Kubota KT30 uses different front and rear tire sizes in this data: front 23×8.50-14 (14 in rim, 8.5 in width) and rear 12.4-24 (24 in rim, 12.4 in width)
Multiple setup note
This data has more than one tire setup for the Kubota KT30. The main front/rear listing is Front 23×8.50-14, Rear 12.4-24. Other setup data found: Front 6.00-16, Rear 12.4-24; Front 12.4-16, Rear 23×8.50-12; Front 9.5-24, Rear 6.0-12. This usually means different wheel, axle, turf/ag/industrial, or market options rather than one universal tire size
Pressure note
For the Kubota KT30 with front 23×8.50-14 and rear 12.4-24 tires, the pressure values captured in the answer are 12 PSI, 14 PSI. Tire pressure is load-dependent, so use this as a reference value rather than a universal setting
Ballast note
For the Kubota KT30 rear 12.4-24 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.
