Quick answer:
The Kubota GB170 tractor tire size is front 6.00-16 and rear 8-16. Other tire setup data found for this model includes Front 6.00-16, Rear 15.5-38; Front 5.00-10, Rear 9.5-16; Front 9.5-24, Rear 6.0-14; plus 1 more, so confirm the wheel option before ordering.
Front tire6.00-16
Rear tire8-16
Front/rear setupDifferent front and rear tire sizes
Tire pressure20 PSI
Rim diameter16 in front/rear
Ballast35 gal
Other setup foundFront 6.00-16, Rear 15.5-38; Front 5.00-10, Rear 9.5-16; Front 9.5-24, Rear 6.0-14; plus 1 more
Kubota GB170 Tire Size Details
| Front tire size | 6.00-16 |
|---|---|
| Rear tire size | 8-16 |
| Front/rear setup | Different front and rear tire sizes |
| Other tire setup found | Front 6.00-16, Rear 15.5-38 |
| Replacement tire size | Front 5.00-10, Rear 9.5-16 |
| R1 ag tire size | Front 9.5-24, Rear 6.0-14 |
| Tire size alternatives / conversions | Front 8-18, Rear 5.00-12 |
| 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 | 16 in |
| Rear rim diameter | 16 in |
| Tire pressure | 20 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 GB170 Extra Tire Notes
| Tire size note | The Kubota GB170 uses different front and rear tire sizes in this data: front 6.00-16 (16 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 GB170. The main front/rear listing is Front 6.00-16, Rear 8-16. Other setup data found: Front 6.00-16, Rear 15.5-38; Front 5.00-10, Rear 9.5-16; Front 9.5-24, Rear 6.0-14; plus 1 more. This usually means different wheel, axle, turf/ag/industrial, or market options rather than one universal tire size |
| Pressure note | For the Kubota GB170 with front 6.00-16 and rear 8-16 tires, the pressure values captured in the answer are 20 PSI. Tire pressure is load-dependent, so use this as a reference value rather than a universal setting |
| Ballast note | For the Kubota GB170 rear 8-16 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.






