The John Deere SST18 tractor tire size is front 13×5.0-16 and the rear is 20×10-8.
Front tire13×5.0-16
Rear tire20×10-8
Front/rear setupDifferent front and rear tire sizes
Tire pressure10 PSI, 8 PSI
Rim diameter16 in front, 8 in rear
John Deere SST18 Tire Size Details
Front tire size
13×5.0-16
Rear tire size
20×10-8
Front/rear setup
Different front and rear tire sizes
Replacement tire size
Front 20×8.00-8, Rear 15×6.00-6
R1 ag tire size
15×6.00-6, 16×8.50-8
Front tire construction
Flotation/implement tire
Rear tire construction
Flotation/implement tire
Front section width
5 in
Rear section width
10 in
Front rim diameter
16 in
Rear rim diameter
8 in
Approx front overall diameter
about 13 in
Approx rear overall diameter
about 20 in
Tire pressure
10 PSI, 8 PSI
Tire Size Comparison Chart
Front rim diameter comparison
This model
16 in
Average
17.1 in
Low
4 in
High
50 in
Rear rim diameter comparison
This model
8 in
Average
25.5 in
Low
0 in
High
50 in
John Deere SST18 Extra Tire Notes
Tire size note
The John Deere SST18 uses different front and rear tire sizes in this data: front 13×5.0-16 (16 in rim, 5 in width) and rear 20×10-8 (8 in rim, 10 in width)
Pressure note
For the John Deere SST18 with front 13×5.0-16 and rear 20×10-8 tires, the pressure values captured in the answer are 10 PSI, 8 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 SST18 data shows front 13×5.0-16 and rear 20×10-8. 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.
