The John Deere 8345RT tractor tire size is front 380/80R38 and the rear is 480/80R50.
Front tire380/80R38
Rear tire480/80R50
Front/rear setupDifferent front and rear tire sizes
Tire pressure35 PSI, 18 PSI
Rim diameter38 in front, 50 in rear
Ballast60 gal
John Deere 8345RT Tire Size Details
Front tire size
380/80R38
Rear tire size
480/80R50
Front/rear setup
Different front and rear tire sizes
R1 ag tire size
480/80R50, 380/80R34
Front tire construction
Metric radial
Rear tire construction
Metric radial
Front section width
380 mm
Rear section width
480 mm
Front aspect ratio
80%
Rear aspect ratio
80%
Front rim diameter
38 in
Rear rim diameter
50 in
Approx front overall diameter
about 61.9 in
Approx rear overall diameter
about 80.2 in
Tire pressure
35 PSI, 18 PSI
Loaded rear tire ballast / fluid capacity
60 gal
Tire Size Comparison Chart
Front rim diameter comparison
This model
38 in
Average
17.1 in
Low
4 in
High
50 in
Rear rim diameter comparison
This model
50 in
Average
25.5 in
Low
0 in
High
50 in
John Deere 8345RT Extra Tire Notes
Tire size note
The John Deere 8345RT uses different front and rear tire sizes in this data: front 380/80R38 (38 in rim, 380 mm width) and rear 480/80R50 (50 in rim, 480 mm width)
Pressure note
For the John Deere 8345RT with front 380/80R38 and rear 480/80R50 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
Ballast note
For the John Deere 8345RT rear 480/80R50 tires, the ballast figure captured in the answer is 60 gal. Liquid ballast capacity can change by tire brand, fill percentage, wheel setup and ballast fluid type
Front/rear matching note
The John Deere 8345RT data shows front 380/80R38 and rear 480/80R50. 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.
