The John Deere D tractor tire size is front 7.50-18 and the rear is 14-30.
Front tire7.50-18
Rear tire14-30
Front/rear setupDifferent front and rear tire sizes
Rim diameter18 in front, 30 in rear
John Deere D Tire Size Details
Front tire size
7.50-18
Rear tire size
14-30
Front/rear setup
Different front and rear tire sizes
Front tire construction
Bias/imperial tire
Rear tire construction
Bias/imperial tire
Front section width
7.5 in
Rear section width
14 in
Front rim diameter
18 in
Rear rim diameter
30 in
Tire size alternatives / conversions
6.50-16, 7.00-16, 85-16
Tire Size Comparison Chart
Front rim diameter comparison
This model
18 in
Average
17.1 in
Low
4 in
High
50 in
Rear rim diameter comparison
This model
30 in
Average
25.5 in
Low
0 in
High
50 in
John Deere D Extra Tire Notes
Tire size note
The John Deere D uses different front and rear tire sizes in this data: front 7.50-18 (18 in rim, 7.5 in width) and rear 14-30 (30 in rim, 14 in width)
Front/rear matching note
The John Deere D data shows front 7.50-18 and rear 14-30. 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.
