John Deere 6M 250 Tire Size + Front & Rear Tractor Tire Guide

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Quick answer:

The John Deere 6M 250 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
Tire pressure35 PSI, 18 PSI
Rim diameter30 in front, 42 in rear

John Deere 6M 250 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 pressure 35 PSI, 18 PSI
Tire size alternatives / conversions 420/85R30, 520/85R42, 16.9R30, 23.1R42, 18.4R30, 24.5R42

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 250 Extra Tire Notes

Tire size note The John Deere 6M 250 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)
Pressure note For the John Deere 6M 250 with front 420/85R30 and rear 520/85R42 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
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.

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