Quick answer:
The John Deere 420C tractor tire size is front 6.00-16 and the rear is 12.4-24.
Front tire6.00-16
Rear tire12.4-24
Front/rear setupDifferent front and rear tire sizes
Tire pressure35 PSI, 18 PSI
Rim diameter16 in front, 24 in rear
John Deere 420C Tire Size Details
| Front tire size | 6.00-16 |
|---|---|
| Rear tire size | 12.4-24 |
| Front/rear setup | Different front and rear tire sizes |
| Replacement tire size | Front 23×10.50-12, Rear 4.80×4.00-8 |
| R1 ag tire size | 6.00-16, 12.4-28 |
| Front tire construction | Bias/imperial tire |
| Rear tire construction | Bias/imperial tire |
| Front section width | 6 in |
| Rear section width | 12.4 in |
| Front rim diameter | 16 in |
| Rear rim diameter | 24 in |
| Tire pressure | 35 PSI, 18 PSI |
Tire Size Comparison Chart
Front rim diameter comparison
Rear rim diameter comparison
John Deere 420C Extra Tire Notes
| Tire size note | The John Deere 420C uses different front and rear tire sizes in this data: front 6.00-16 (16 in rim, 6 in width) and rear 12.4-24 (24 in rim, 12.4 in width) |
|---|---|
| Pressure note | For the John Deere 420C with front 6.00-16 and rear 12.4-24 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 |
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 deere.com website for official information.







