The John Deere 7185J tractor tire size is front 16.9-30 and the rear is 20.8-42.
Front tire16.9-30
Rear tire20.8-42
Front/rear setupDifferent front and rear tire sizes
Tire pressure14 PSI, 10 PSI
Rim diameter30 in front, 42 in rear
John Deere 7185J Tire Size Details
Front tire size
16.9-30
Rear tire size
20.8-42
Front/rear setup
Different front and rear tire sizes
Front tire construction
Bias/imperial tire
Rear tire construction
Bias/imperial tire
Front section width
16.9 in
Rear section width
20.8 in
Front rim diameter
30 in
Rear rim diameter
42 in
Tire pressure
14 PSI, 10 PSI
Tire Size Comparison Chart
Front rim diameter comparison
This model
30 in
Average
17.1 in
Low
4 in
High
50 in
Rear rim diameter comparison
This model
42 in
Average
25.5 in
Low
0 in
High
50 in
John Deere 7185J Extra Tire Notes
Tire size note
The John Deere 7185J uses different front and rear tire sizes in this data: front 16.9-30 (30 in rim, 16.9 in width) and rear 20.8-42 (42 in rim, 20.8 in width)
Pressure note
For the John Deere 7185J with front 16.9-30 and rear 20.8-42 tires, the pressure values captured in the answer are 14 PSI, 10 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.
