The John Deere 6M 230 tractor tire size is front 420/85R30 and the rear is 520/85R42.
Front tire420/85R30
Rear tire520/85R42
Front/rear setupDifferent front and rear tire sizes
Rim diameter30 in front, 42 in rear
John Deere 6M 230 Tire Size Details
Front tire size
420/85R30
Rear tire size
520/85R42
Front/rear setup
Different front and rear tire sizes
Front tire construction
Metric radial
Rear tire construction
Metric radial
Front section width
420 mm
Rear section width
520 mm
Front aspect ratio
85%
Rear aspect ratio
85%
Front rim diameter
30 in
Rear rim diameter
42 in
Approx front overall diameter
about 58.1 in
Approx rear overall diameter
about 76.8 in
Tire Size Comparison Chart
Front rim diameter comparison
This model
30 in
Average
17.1 in
Low
4 in
High
50 in
Rear rim diameter comparison
This model
42 in
Average
25.5 in
Low
0 in
High
50 in
John Deere 6M 230 Extra Tire Notes
Tire size note
The John Deere 6M 230 uses different front and rear tire sizes in this data: front 420/85R30 (30 in rim, 420 mm width) and rear 520/85R42 (42 in rim, 520 mm width)
Front/rear matching note
The John Deere 6M 230 data shows front 420/85R30 and rear 520/85R42. 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.
