The John Deere 6155M tractor tire size is front 320/85R34 and the rear is 460/85R38.
Front tire320/85R34
Rear tire460/85R38
Front/rear setupDifferent front and rear tire sizes
Tire pressure30 PSI, 20 PSI
Rim diameter34 in front, 38 in rear
John Deere 6155M Tire Size Details
Front tire size
320/85R34
Rear tire size
460/85R38
Front/rear setup
Different front and rear tire sizes
Original factory tire size
Front 10.00-16, Rear 460/85R38
Replacement tire size
Front 380/85R28, Rear 460/85R38
R1 ag tire size
380/85R28, 460/85R38
Front tire construction
Metric radial
Rear tire construction
Metric radial
Front section width
320 mm
Rear section width
460 mm
Front aspect ratio
85%
Rear aspect ratio
85%
Front rim diameter
34 in
Rear rim diameter
38 in
Approx front overall diameter
about 55.4 in
Approx rear overall diameter
about 68.8 in
Tire pressure
30 PSI, 20 PSI
Tire size alternatives / conversions
420/85R28, 480/80R38
Tire Size Comparison Chart
Front rim diameter comparison
This model
34 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 6155M Extra Tire Notes
Tire size note
The John Deere 6155M uses different front and rear tire sizes in this data: front 320/85R34 (34 in rim, 320 mm width) and rear 460/85R38 (38 in rim, 460 mm width)
Pressure note
For the John Deere 6155M with front 320/85R34 and rear 460/85R38 tires, the pressure values captured in the answer are 30 PSI, 20 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 6155M data shows front 320/85R34 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.
