The John Deere 8120 tractor tire size is front 11.00-24 and the rear is 480/80R46.
Front tire11.00-24
Rear tire480/80R46
Front/rear setupDifferent front and rear tire sizes
Tire pressure18 PSI, 35 PSI
Rim diameter24 in front, 46 in rear
Ballast75 gal
John Deere 8120 Tire Size Details
Front tire size
11.00-24
Rear tire size
480/80R46
Front/rear setup
Different front and rear tire sizes
Front tire construction
Bias/imperial tire
Rear tire construction
Metric radial
Front section width
11 in
Rear section width
480 mm
Rear aspect ratio
80%
Front rim diameter
24 in
Rear rim diameter
46 in
Approx rear overall diameter
about 76.2 in
Tire pressure
18 PSI, 35 PSI
Loaded rear tire ballast / fluid capacity
75 gal
Tire Size Comparison Chart
Front rim diameter comparison
This model
24 in
Average
17.1 in
Low
4 in
High
50 in
Rear rim diameter comparison
This model
46 in
Average
25.5 in
Low
0 in
High
50 in
John Deere 8120 Extra Tire Notes
Tire size note
The John Deere 8120 uses different front and rear tire sizes in this data: front 11.00-24 (24 in rim, 11 in width) and rear 480/80R46 (46 in rim, 480 mm width)
Pressure note
For the John Deere 8120 with front 11.00-24 and rear 480/80R46 tires, the pressure values captured in the answer are 18 PSI, 35 PSI. Tire pressure is load-dependent, so use this as a reference value rather than a universal setting
Ballast note
For the John Deere 8120 rear 480/80R46 tires, the ballast figure captured in the answer is 75 gal. Liquid ballast capacity can change by tire brand, fill percentage, wheel setup and ballast fluid type
Front/rear matching note
The John Deere 8120 data shows front 11.00-24 and rear 480/80R46. 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.
