Tire Combinations

IMPORTANT: Avoid excessive drive train wear. Do not mix worn and new tires, bias and radial, or tires of different diameters. Do not use R2 tires in combination with R1.

Available tires are grouped by rolling circumference index. Rolling circumference is the distance covered by the tire in one revolution. Tires within a group, regardless of rim size, are the same or nearly the same height. Knowledge and understanding of the rolling circumference index and group size make it easier to select suitable tire combinations for the front and rear wheels.

The rolling circumference index is an important factor for correctly setting up the tractor. Since front tires are smaller than rear tires, front tires have to rotate faster to cover the same distance as the rear. Therefore it is important to select the correct size to optimize efficiency and ensure longer tire life.

The front tire must be from a group that is five group sizes smaller than the rear tire group. Example: if the rear tires are from Group 47, the front tires must be from Group 42. Rim size is irrelevant. Tires with different rim sizes such as 18.4R46 and 20.8R42 belong to the Group with the same rolling circumference, in this case 47. Tire sizes are stated in the tables below.

If you have any questions or need assistance in choosing the correct combination, see your John Deere™ dealer.

IMPORTANT: If the tire combination or tire manufacturer is to be changed, the transmission ratio must be ascertained. See Calculate Tire Combination.

IMPORTANT: If the transmission ratio is changed, the following service must be performed by a John Deere™ dealer:

• Change the gear pair for the front-wheel drive output
• Change tire size in the software of the control units
• Calibrate the radar (tractors with radar only)

FRONT TIRES
	Minimum Recommended Row Width mm (in.)
	762 (30)	812.8 (32)	1016 (40)+
	Tire Width mm (in.)
Group Size	420 (16.9)	480 (18.4)	520 (20.8)	620 (23.1)
43	420/85R34	480/70R34	540/65R34	—
42	16.9R30 420/90R30	480/70R30	540/65R30	600/65R28

REAR TIRES
	Minimum Recommended Row Width mm (in.)
	762 (30)	812.8 (32)	1016 (40)+
	Tire Width mm (in.)
Group Size	480 (18.4)	520 (20.8)	620 (24.5)	710 (28)
48	480/80R50	520/85R46	650/85R38	710/70R42
47	480/80R46	520/85R42	620/70R42	710/70R38

Tire combinations on tractors 6140R and 6150R with front-wheel drive axles

Rear Wheel			Front Wheel			Tractors
Size	SRI	Load index	Size	SRI	Load index	6140R	6150R
320/90R54	925	149A8	320/85R38	725	138A8	—	X
380/90R50	975	151A8	320/85R38	725	138A8	—	X
			380/85R34 -R1	725	137A8
480/80R46 -R1 480/80R46	925	158A8 158B	420/90R30 -R1 420/90R30	725	142A8	—	X
			380/85R34 -R1 380/85R34	725	137A8
620/70R42	925	160A8	600/65R28	700	147A8 154A8	—	X
			480/70R30	700	152A8
520/85R42 -R1 520/85R42	925	157A8	420/90R30 -R1	725	142A8	—	X
			380/85R34 -R1		137A8
			16.9R30	700	144A8
			480/70R30	700	152A8
710/70R38	925	166A8	480/70R30	700	152A8	—	X
			600/65R28	700	147A8 154A8
18.4R42 -R2	925	148A8	16.9R28 -R2	700	136A8	X	X
320/90R50	875	147A8	320/85R34 -R1	675	133A8	X	X
			320/90R50	875	147A8	—	X*
420/80R46 -R1	875	151A8	420/85R28 -R1	675	139A8	X	X
			380/85R30 -R1	675	135A8
14.9R46 -R1	875	142A8	320/85R34 -R1	675	133A8	X	X
			380/85R30 -R1	675	135A8
18.4R42	875	148A8	16.9R28	675	136A8	X	X
480/80R42 -R1 480/80R42	875	151A8 151B	420/85R28 -R1	675	139A8	X	X
			380/85R30 -R1	675	135A8
			380/85R30	675	135A8
			320/85R34 -R1	675	133A8
650/65R38	875	151A8 151B	540/65R28	675	142A8	X	X
520/85R38 -R1	875	155A8	420/85R28 -R1	675	139A8	X	X
			16.9R28	675	136A8
			380/85R30 -R1	675	135A8
18.4R38 -R2	875	141A8	320/90R46 -R2	875	148A8	—	X*
480/80R38 -R1	825	149A8	380/85R28 -R1	650	133A8	X	—
			16.9R26 -R1	625	135A8
* For Hi-Crop only

Tire combinations on tractors 6170R to 6210R with front-wheel drive axles

Rear Wheel			Front Wheel
Size	SRI	Load index	Size	SRI	Load index
380/90R54	975	152A8	380/80R38	750	142A8
480/80R50	975	159A8	420/85R34	750	147A8
			380/80R38	750	142A8
			480/70R34	750	155A8 146A8
520/85R46	975	158A8	420/85R34	750	147A8
			480/70R34	750	155A8 146A8 143A8
710/70R42	975	173A8 168A8 173B	480/70R34	750	155A8 146A8 143A8
650/85R38	975	173A8 173B	480/70R34	750	155A8 146A8 143A8
18.4R46 -R2	975	155A8	16.9R30 -R2	725	141A8
520/85R42 -R2	975	157A8	16.9R30 -R2	725	141A8
380/90R50	975	151A8	320/85R38	725	138A8
			380/85R34 -R1	725	137A8
480/80R46 -R1 480/80R46	925	158A8 158B	420/90R30 -R1 420/90R30	725	142A8
			380/85R34 -R1 380/85R34	725	137A8
520/85R42 -R1 520/85R42	925	157A8	420/90R30 -R1	725	142A8
			380/85R34 -R1		137A8
			16.9R30	700	144A8
			480/70R30	700	152A8
620/70R42	925	160A8	600/65R28	700	147A8 154A8
			480/70R30	700	152A8
710/70R38	925	166A8	600/65R28	700	147A8 154A8
			480/70R30	700	152A8

Tire combinations on tractors 6140R and 6150R without front-wheel drive axles

Rear Wheel			Front Wheel
Size	SRI	Load index	Size	SRI	Load index
320/90R50	875	147A8	11.00-20 -F2	500	12PR
			14L-16.1 -F2	450	12PR
			11.00-16 -F2	450	12PR
420/80R46 -R1	875	151A8	11.00-20 -F2	500	12PR
			14L-16.1 -F2	450	12PR
			11.00-16 -F2	450	12PR
14.9R46 -R1	875	142A8	11.00-20 -F2	500	12PR
			14L-16.1 -F2	450	12PR
			11.00-16 -F2	450	12PR
18.4R42	875	148A8	11.00-20 -F2	500	12PR
			14L-16.1 -F2	450	12PR
			11.00-16 -F2	450	12PR
480/80R42 -R1 480/80R42	875	151A8 151B	11.00-20 -F2	500	12PR
			14L-16.1 -F2	450	12PR
			11.00-16 -F2	450	12PR
650/65R38	875	151A8 151B	11.00-20 -F2	500	12PR
			14L-16.1 -F2	450	12PR
			11.00-16 -F2	450	12PR
520/85R38 -R1	875	155A8	11.00-20 -F2	500	12PR
			14L-16.1 -F2	450	12PR
			11.00-16 -F2	450	12PR
480/80R38 -R1	825	149A8	11.00-20 -F2	500	12PR
			14L-16.1 -F2	450	12PR
			11.00-16 -F2	450	12PR

Tire combinations on tractors 6170R and 6190R without front-wheel drive axles

Rear Wheel			Front Wheel
Size	SRI	Load index	Size	SRI	Load index
380/90R50	975	151A8	11.00-20 -F2	500	12PR
			14L-16.1 -F2	450	12PR
			11.00-16 -F2	450	12PR
520/85R42 -R2	975	157A8	11.00-20 -F2	500	12PR
			14L-16.1 -F2	450	12PR
			11.00-16 -F2	450	12PR
480/80R46 -R1 480/80R46	925	158A8 158B	11.00-20 -F2	500	12PR
			14L-16.1 -F2	450	12PR
			11.00-16 -F2	450	12PR
520/85R42 -R1 520/85R42	925	157A8	11.00-20 -F2	500	12PR
			14L-16.1 -F2	450	12PR
			11.00-16 -F2	450	12PR
620/70R42	925	160A8	11.00-20 -F2	500	12PR
			14L-16.1 -F2	450	12PR
			11.00-16 -F2	450	12PR
710/70R38	925	166A8 171B	11.00-20 -F2	500	12PR
			14L-16.1 -F2	450	12PR
			11.00-16 -F2	450	12PR