The Kubota GT850 tractor tire size is front 16×7.00-8 and rear 23×10.50-12. Other tire setup data found for this model includes Front 20×10.00-10, Rear 20×8.00-10; Front 31×15.50-15, Rear 23×8.50-12; Front 23×8.50-12, Rear 23×10.50-12, so confirm the wheel option before ordering.
Front tire16×7.00-8
Rear tire23×10.50-12
Front/rear setupDifferent front and rear tire sizes
Tire pressure30 PSI, 20 PSI
Rim diameter8 in front, 12 in rear
Other setup foundFront 20×10.00-10, Rear 20×8.00-10; Front 31×15.50-15, Rear 23×8.50-12; Front 23×8.50-12, Rear 23×10.50-12
Kubota GT850 Tire Size Details
Front tire size
16×7.00-8
Rear tire size
23×10.50-12
Front/rear setup
Different front and rear tire sizes
Replacement tire size
Front 20×10.00-10, Rear 20×8.00-10
R1 ag tire size
Front 31×15.50-15, Rear 23×8.50-12
Tire size alternatives / conversions
Front 23×8.50-12, Rear 23×10.50-12
Front tire construction
Flotation/implement tire
Rear tire construction
Flotation/implement tire
Front section width
7 in
Rear section width
10.5 in
Front rim diameter
8 in
Rear rim diameter
12 in
Approx front overall diameter
about 16 in
Approx rear overall diameter
about 23 in
Tire pressure
30 PSI, 20 PSI
Tire Size Comparison Chart
Front rim diameter comparison
This model
8 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 GT850 Extra Tire Notes
Tire size note
The Kubota GT850 uses different front and rear tire sizes in this data: front 16×7.00-8 (8 in rim, 7 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 GT850. The main front/rear listing is Front 16×7.00-8, Rear 23×10.50-12. Other setup data found: Front 20×10.00-10, Rear 20×8.00-10; Front 31×15.50-15, Rear 23×8.50-12; Front 23×8.50-12, 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 GT850 with front 16×7.00-8 and rear 23×10.50-12 tires, the pressure values captured in the answer are 30 PSI, 20 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.
