The Kubota M8030 tractor tire size is front 7.50-18 and rear 18.4-30. Other tire setup data found for this model includes Front 12.4-24, Rear 7.5-16, so confirm the wheel option before ordering.
Front tire7.50-18
Rear tire18.4-30
Front/rear setupDifferent front and rear tire sizes
Tire pressure26 PSI, 14 PSI
Rim diameter18 in front, 30 in rear
Ballast55 gal
Other setup foundFront 12.4-24, Rear 7.5-16
Kubota M8030 Tire Size Details
Front tire size
7.50-18
Rear tire size
18.4-30
Front/rear setup
Different front and rear tire sizes
Replacement tire size
Front 12.4-24, Rear 7.5-16
Front tire construction
Bias/imperial tire
Rear tire construction
Bias/imperial tire
Front section width
7.5 in
Rear section width
18.4 in
Front rim diameter
18 in
Rear rim diameter
30 in
Tire pressure
26 PSI, 14 PSI
Loaded rear tire ballast / fluid capacity
55 gal
Tire Size Comparison Chart
Front rim diameter comparison
This model
18 in
Average
18 in
Low
12 in
High
28 in
Rear rim diameter comparison
This model
30 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 M8030 Extra Tire Notes
Tire size note
The Kubota M8030 uses different front and rear tire sizes in this data: front 7.50-18 (18 in rim, 7.5 in width) and rear 18.4-30 (30 in rim, 18.4 in width)
Multiple setup note
This data has more than one tire setup for the Kubota M8030. The main front/rear listing is Front 7.50-18, Rear 18.4-30. Other setup data found: Front 12.4-24, Rear 7.5-16. This usually means different wheel, axle, turf/ag/industrial, or market options rather than one universal tire size
Pressure note
For the Kubota M8030 with front 7.50-18 and rear 18.4-30 tires, the pressure values captured in the answer are 26 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 M8030 rear 18.4-30 tires, the ballast figure captured in the answer is 55 gal. Liquid ballast capacity can change by tire brand, fill percentage, wheel setup and ballast fluid type
Front/rear matching note
The Kubota M8030 data shows front 7.50-18 and rear 18.4-30. 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.
