Travel Speeds

40 km/h (25 mph); rated engine speed 2300 rpm; 420/85-30 tires
Travel speeds with reduction gear					Travel speeds without reduction gear
Range	Gear	km/h	mph		Range	Gear	km/h	mph
A	1	1,4	0.9		A	1	3,1	1.9
	2	1,7	1.0			2	3,7	2.3
	3	2,0	1.2			3	4,5	2.8
	4	2,4	1.5			4	5,5	3.4
B	1	2,7	1.7		B	1	6,2	3.9
	2	3,3	2.1			2	7,5	4.6
	3	4,0	2.5			3	9,0	5.6
	4	4,8	3.0			4	11,0	6.8
C	1	4,5	2.8		C	1	10,2	6.3
	2	5,4	3.4			2	12,3	7.6
	3	6,5	4.0			3	14,7	9.2
	4	8,0	5.0			4	18,1	11.2
D	1	9,3	5.8		D	1	21,0	13.1
	2	11,2	7.0			2	25,3	15.8
	3	13,4	8.3			3	30,3	18.9
	4	16,4	10.2			4	37,2	23.1
A	R1	1,4	0.9		A	R1	3,2	2.0
	R2	1,7	1.1			R2	3,9	2.4
	R3	2,1	1.3			R3	4,7	2.9
	R4	2,5	1.6			R4	5,7	3.5
B	R1	2,9	1.8		B	R1	6,5	4.0
	R2	3,4	2.1			R2	7,8	4.9
	R3	4,1	2.6			R3	9,3	5.8
	R4	5,1	3.1			R4	11,4	7.1
C	R1	4,7	2.9		C	R1	10,7	6.6
	R2	5,7	3.5			R2	12,8	8.0
	R3	6,8	4.2			R3	15,4	9.6
	R4	8,3	5.2			R4	18,8	11.7
D	R1	9,7	6.0		D	R1	22,0	13.6
	R2	11,7	7.3			R2	26,4	16.4
	R3	14,0	8.7			R3	31,7	19.7
	R4	17,1	10.6			R4	38,8	24.1

Other tires (supplied by factory):
14.9-30	4.3% slower	540/65-30	same
16.9-30	same	420/85-34	7.0% faster
16.9-34	7.0% faster	480/70-34	7.0% faster
12.4-36	0.8% slower	540/65-34	7.0% faster
13.6-38	6.5% faster	320/85-36	0.8% slower
380/85-30	4.3% slower	340/85-38	6.5% faster
480/70-30	same

The ground travel speeds shown in the table are theoretical. The actual speeds vary with rolling circumference, load, tire pressure, make of tire, wheel slip etc. If the precise speed is required for specific applications, then it must be obtained by measurement.