The John Deere STX38 Yellow Deck tractor tire size is front 13×6.5-6 and the rear is 18×8.5-8.
Front tire13×6.5-6
Rear tire18×8.5-8
Front/rear setupDifferent front and rear tire sizes
Tire pressure22 PSI, 12 PSI
Rim diameter6 in front, 8 in rear
Ballast30 gal
John Deere STX38 Yellow Deck Tire Size Details
Front tire size
13×6.5-6
Rear tire size
18×8.5-8
Front/rear setup
Different front and rear tire sizes
Front tire construction
Flotation/implement tire
Rear tire construction
Flotation/implement tire
Front section width
6.5 in
Rear section width
8.5 in
Front rim diameter
6 in
Rear rim diameter
8 in
Approx front overall diameter
about 13 in
Approx rear overall diameter
about 18 in
Tire pressure
22 PSI, 12 PSI
Loaded rear tire ballast / fluid capacity
30 gal
Tire Size Comparison Chart
Front rim diameter comparison
This model
6 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 STX38 Yellow Deck Extra Tire Notes
Tire size note
The John Deere STX38 Yellow Deck uses different front and rear tire sizes in this data: front 13×6.5-6 (6 in rim, 6.5 in width) and rear 18×8.5-8 (8 in rim, 8.5 in width)
Pressure note
For the John Deere STX38 Yellow Deck with front 13×6.5-6 and rear 18×8.5-8 tires, the pressure values captured in the answer are 22 PSI, 12 PSI. Tire pressure is load-dependent, so use this as a reference value rather than a universal setting
Ballast note
For the John Deere STX38 Yellow Deck rear 18×8.5-8 tires, the ballast figure captured in the answer is 30 gal. Liquid ballast capacity can change by tire brand, fill percentage, wheel setup and ballast fluid type
Front/rear matching note
The John Deere STX38 Yellow Deck data shows front 13×6.5-6 and rear 18×8.5-8. 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.
