The John Deere 8370RT tractor tire size is front 380/80R38 and the rear is 460/85R38.
Front tire380/80R38
Rear tire460/85R38
Front/rear setupDifferent front and rear tire sizes
Tire pressure44 PSI, 14 PSI
Rim diameter38 in front/rear
John Deere 8370RT Tire Size Details
Front tire size
380/80R38
Rear tire size
460/85R38
Front/rear setup
Different front and rear tire sizes
Original factory tire size
Front 380/80R38, Rear 480/80R50
Replacement tire size
Front 380/80R38, Rear 480/80R50
R1 ag tire size
380/80R38, 480/80R50
Front tire construction
Metric radial
Rear tire construction
Metric radial
Front section width
380 mm
Rear section width
460 mm
Front aspect ratio
80%
Rear aspect ratio
85%
Front rim diameter
38 in
Rear rim diameter
38 in
Approx front overall diameter
about 61.9 in
Approx rear overall diameter
about 68.8 in
Tire pressure
44 PSI, 14 PSI
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
38 in
Average
25.5 in
Low
0 in
High
50 in
John Deere 8370RT Extra Tire Notes
Tire size note
The John Deere 8370RT uses different front and rear tire sizes in this data: front 380/80R38 (38 in rim, 380 mm width) and rear 460/85R38 (38 in rim, 460 mm width)
Pressure note
For the John Deere 8370RT with front 380/80R38 and rear 460/85R38 tires, the pressure values captured in the answer are 44 PSI, 14 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 8370RT data shows front 380/80R38 and rear 460/85R38. 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.
