The Kubota F3680 tractor tire size is front 24×12.00-12 and rear 18×9.5-8. Other tire setup data found for this model includes Front 24×12-12, Rear 18×9.5-8; Front 11.2-24, Rear 18.4-34, so confirm the wheel option before ordering.
Front tire24×12.00-12
Rear tire18×9.5-8
Front/rear setupDifferent front and rear tire sizes
Tire pressure30 PSI, 12 PSI, 14 PSI
Rim diameter12 in front, 8 in rear
Ballast55 gal
Other setup foundFront 24×12-12, Rear 18×9.5-8; Front 11.2-24, Rear 18.4-34
Kubota F3680 Tire Size Details
Front tire size
24×12.00-12
Rear tire size
18×9.5-8
Front/rear setup
Different front and rear tire sizes
Other tire setup found
Front 24×12-12, Rear 18×9.5-8
Tire size alternatives / conversions
Front 11.2-24, Rear 18.4-34
Front tire construction
Flotation/implement tire
Rear tire construction
Flotation/implement tire
Front section width
12 in
Rear section width
9.5 in
Front rim diameter
12 in
Rear rim diameter
8 in
Approx front overall diameter
about 24 in
Approx rear overall diameter
about 18 in
Tire pressure
30 PSI, 12 PSI, 14 PSI
Loaded rear tire ballast / fluid capacity
55 gal
Tire Size Comparison Chart
Front rim diameter comparison
This model
12 in
Average
7 in
Low
6 in
High
10 in
Rear rim diameter comparison
This model
8 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 F3680 Extra Tire Notes
Tire size note
The Kubota F3680 uses different front and rear tire sizes in this data: front 24×12.00-12 (12 in rim, 12 in width) and rear 18×9.5-8 (8 in rim, 9.5 in width)
Multiple setup note
This data has more than one tire setup for the Kubota F3680. The main front/rear listing is Front 24×12.00-12, Rear 18×9.5-8. Other setup data found: Front 24×12-12, Rear 18×9.5-8; Front 11.2-24, Rear 18.4-34. This usually means different wheel, axle, turf/ag/industrial, or market options rather than one universal tire size
Pressure note
For the Kubota F3680 with front 24×12.00-12 and rear 18×9.5-8 tires, the pressure values captured in the answer are 30 PSI, 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 F3680 rear 18×9.5-8 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 F3680 data shows front 24×12.00-12 and rear 18×9.5-8. 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.
