Quick answer:
The Kubota B1830 tractor tire size is front 6-12 and rear 8-16. Other tire setup data found for this model includes Front 6-14, Rear 9.5-24, so confirm the wheel option before ordering.
Front tire6-12
Rear tire8-16
Front/rear setupDifferent front and rear tire sizes
Tire pressure30 PSI, 20 PSI
Rim diameter12 in front, 16 in rear
Other setup foundFront 6-14, Rear 9.5-24
Kubota B1830 Tire Size Details
| Front tire size | 6-12 |
|---|---|
| Rear tire size | 8-16 |
| Front/rear setup | Different front and rear tire sizes |
| Other tire setup found | Front 6-14, Rear 9.5-24 |
| Front tire construction | Bias/imperial tire |
| Rear tire construction | Bias/imperial tire |
| Front section width | 6 in |
| Rear section width | 8 in |
| Front rim diameter | 12 in |
| Rear rim diameter | 16 in |
| Tire pressure | 30 PSI, 20 PSI |
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 B1830 Extra Tire Notes
| Tire size note | The Kubota B1830 uses different front and rear tire sizes in this data: front 6-12 (12 in rim, 6 in width) and rear 8-16 (16 in rim, 8 in width) |
|---|---|
| Multiple setup note | This data has more than one tire setup for the Kubota B1830. The main front/rear listing is Front 6-12, Rear 8-16. Other setup data found: Front 6-14, Rear 9.5-24. This usually means different wheel, axle, turf/ag/industrial, or market options rather than one universal tire size |
| Pressure note | For the Kubota B1830 with front 6-12 and rear 8-16 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.






