The Kubota M115A tractor tire size is front 7.5-18 and rear 18.4-28. Other tire setup data found for this model includes Front 13.6R24, Rear 420/85R38; Front 12.4-24, Rear 7.5-16; Front 12.4-24, Rear 13.6-24, so confirm the wheel option before ordering.
Front tire7.5-18
Rear tire18.4-28
Front/rear setupDifferent front and rear tire sizes
Tire pressure30 PSI, 14 PSI
Rim diameter18 in front, 28 in rear
Other setup foundFront 13.6R24, Rear 420/85R38; Front 12.4-24, Rear 7.5-16; Front 12.4-24, Rear 13.6-24
Kubota M115A Tire Size Details
Front tire size
7.5-18
Rear tire size
18.4-28
Front/rear setup
Different front and rear tire sizes
Replacement tire size
Front 13.6R24, Rear 420/85R38
R1 ag tire size
Front 12.4-24, Rear 7.5-16
Tire size alternatives / conversions
Front 12.4-24, Rear 13.6-24
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
28 in
Tire pressure
30 PSI, 14 PSI
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
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 M115A Extra Tire Notes
Tire size note
The Kubota M115A uses different front and rear tire sizes in this data: front 7.5-18 (18 in rim, 7.5 in width) and rear 18.4-28 (28 in rim, 18.4 in width)
Multiple setup note
This data has more than one tire setup for the Kubota M115A. The main front/rear listing is Front 7.5-18, Rear 18.4-28. Other setup data found: Front 13.6R24, Rear 420/85R38; Front 12.4-24, Rear 7.5-16; Front 12.4-24, Rear 13.6-24. This usually means different wheel, axle, turf/ag/industrial, or market options rather than one universal tire size
Pressure note
For the Kubota M115A with front 7.5-18 and rear 18.4-28 tires, the pressure values captured in the answer are 30 PSI, 14 PSI. Tire pressure is load-dependent, so use this as a reference value rather than a universal setting
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.
