The Kubota M4073 tractor tire size is front 320/85R20 and rear 13.6-28. Other tire setup data found for this model includes Front 320/85R20, Rear 420/85R30; Front 7.00-12, Rear 11.2-24; Front 420/85R30, Rear 320/85R20; plus 1 more, so confirm the wheel option before ordering.
Front tire320/85R20
Rear tire13.6-28
Front/rear setupDifferent front and rear tire sizes
Rim diameter20 in front, 28 in rear
Ballast35 gal
Other setup foundFront 320/85R20, Rear 420/85R30; Front 7.00-12, Rear 11.2-24; Front 420/85R30, Rear 320/85R20; plus 1 more
Kubota M4073 Tire Size Details
Front tire size
320/85R20
Rear tire size
13.6-28
Front/rear setup
Different front and rear tire sizes
Other tire setup found
Front 320/85R20, Rear 420/85R30
Replacement tire size
Front 7.00-12, Rear 11.2-24
R1 ag tire size
Front 420/85R30, Rear 320/85R20
Tire size alternatives / conversions
Front 14.9R30, Rear 420/85R30
Front tire construction
Metric radial
Rear tire construction
Bias/imperial tire
Front section width
320 mm
Rear section width
13.6 in
Front aspect ratio
85%
Front rim diameter
20 in
Rear rim diameter
28 in
Approx front overall diameter
about 41.4 in
Loaded rear tire ballast / fluid capacity
35 gal
Tire Size Comparison Chart
Front rim diameter comparison
This model
20 in
Average
18 in
Low
12 in
High
28 in
Rear rim diameter comparison
This model
28 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 M4073 Extra Tire Notes
Tire size note
The Kubota M4073 uses different front and rear tire sizes in this data: front 320/85R20 (20 in rim, 320 mm width) and rear 13.6-28 (28 in rim, 13.6 in width)
Multiple setup note
This data has more than one tire setup for the Kubota M4073. The main front/rear listing is Front 320/85R20, Rear 13.6-28. Other setup data found: Front 320/85R20, Rear 420/85R30; Front 7.00-12, Rear 11.2-24; Front 420/85R30, Rear 320/85R20; plus 1 more. This usually means different wheel, axle, turf/ag/industrial, or market options rather than one universal tire size
Ballast note
For the Kubota M4073 rear 13.6-28 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
Front/rear matching note
The Kubota M4073 data shows front 320/85R20 and rear 13.6-28. 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 kubotausa.com website for official information.
