Quick answer:
The Kubota B2100 tractor tire size is front 6-12 and rear 8.3-16. Other tire setup data found for this model includes Front 6-12, Rear 9.5-16, so confirm the wheel option before ordering.
Front tire6-12
Rear tire8.3-16
Front/rear setupDifferent front and rear tire sizes
Tire pressure35 PSI, 18 PSI
Rim diameter12 in front, 16 in rear
Ballast35 gal
Other setup foundFront 6-12, Rear 9.5-16
Kubota B2100 Tire Size Details
| Front tire size | 6-12 |
|---|---|
| Rear tire size | 8.3-16 |
| Front/rear setup | Different front and rear tire sizes |
| Other tire setup found | Front 6-12, Rear 9.5-16 |
| Front tire construction | Bias/imperial tire |
| Rear tire construction | Bias/imperial tire |
| Front section width | 6 in |
| Rear section width | 8.3 in |
| Front rim diameter | 12 in |
| Rear rim diameter | 16 in |
| Tire pressure | 35 PSI, 18 PSI |
| Loaded rear tire ballast / fluid capacity | 35 gal |
Tire Size Comparison Chart
Front rim diameter comparison
Rear rim diameter comparison
Benchmarks use typical low, average and high rim diameters for the sub-compact / compact tractor category, not scraped low/high outliers.
Kubota B2100 Extra Tire Notes
| Tire size note | The Kubota B2100 uses different front and rear tire sizes in this data: front 6-12 (12 in rim, 6 in width) and rear 8.3-16 (16 in rim, 8.3 in width) |
|---|---|
| Multiple setup note | This data has more than one tire setup for the Kubota B2100. The main front/rear listing is Front 6-12, Rear 8.3-16. Other setup data found: Front 6-12, Rear 9.5-16. This usually means different wheel, axle, turf/ag/industrial, or market options rather than one universal tire size |
| Pressure note | For the Kubota B2100 with front 6-12 and rear 8.3-16 tires, the pressure values captured in the answer are 35 PSI, 18 PSI. Tire pressure is load-dependent, so use this as a reference value rather than a universal setting |
| Ballast note | For the Kubota B2100 rear 8.3-16 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 |
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.






