Quick answer:
The John Deere 6610 tractor tire size is front 16.9R24 and the rear is 18.4R38.
Front tire16.9R24
Rear tire18.4R38
Front/rear setupDifferent front and rear tire sizes
Tire pressure35 PSI, 18 PSI
Rim diameter24 in front, 38 in rear
John Deere 6610 Tire Size Details
| Front tire size | 16.9R24 |
|---|---|
| Rear tire size | 18.4R38 |
| Front/rear setup | Different front and rear tire sizes |
| Original factory tire size | Front 16.9R26, Rear 18.4R38 |
| Replacement tire size | Front 16.9R26, Rear 18.4R38 |
| R1 ag tire size | 16.9R26, 18.4R38 |
| Front tire construction | Imperial radial |
| Rear tire construction | Imperial radial |
| Front section width | 16.9 in |
| Rear section width | 18.4 in |
| Front rim diameter | 24 in |
| Rear rim diameter | 38 in |
| Tire pressure | 35 PSI, 18 PSI |
| Tire size alternatives / conversions | 520/70R38, 600/65R38, 18.4R38 |
Tire Size Comparison Chart
Front rim diameter comparison
Rear rim diameter comparison
John Deere 6610 Extra Tire Notes
| Tire size note | The John Deere 6610 uses different front and rear tire sizes in this data: front 16.9R24 (24 in rim, 16.9 in width) and rear 18.4R38 (38 in rim, 18.4 in width) |
|---|---|
| Pressure note | For the John Deere 6610 with front 16.9R24 and rear 18.4R38 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 |
| Front/rear matching note | The John Deere 6610 data shows front 16.9R24 and rear 18.4R38. 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 deere.com website for official information.







