Permissible Rear Axle Load in Relation to Tires

The values quoted here apply only for travel speeds up to 40 km/h (25 mph).

On leaving the factory, tractors may be equipped with the following tires:

Permissible rear axle load:

Tires		SRI*	6230 tractors	6330 and 6430 tractors
21.5L-16.1	6PR..............	525 mm (20.7 in.)	2500 kg (5510 lb)	2500 kg (5510 lb)
16.9R24	134A8..............	625 mm (24.6 in.)	4240 kg (9345 lb)	4240 kg (9345 lb)
16.9-24	6PR..............	625 mm (24.6 in.)	3100 kg (6835 lb)	3100 kg (6835 lb)
18.4R26	140A8..............	675 mm (26.6 in.)	5000 kg (11025 lb)	5000 kg (11025 lb)
18.4-26	6PR..............	675 mm (26.6 in.)	3600 kg (7935 lb)	3600 kg (7935 lb)
16.9R30	137A8..............	700 mm (27.6 in.)	4600 kg (10140 lb)	4600 kg (10140 lb)
18.4R30	142A8..............	725 mm (28.5 in.)	5300 kg (11685 lb)	5300 kg (11685 lb)
16.9R34	139A8..............	750 mm (29.5 in.)	4860 kg (10715 lb)	4860 kg (10715 lb)
16.9-34	10PR..............	730 mm (28.7 in.)	5600 kg (12350 lb)	6500 kg (14330 lb)
18.4R34	144A8..............	775 mm (30.5 in.)	5600 kg (12350 lb)	5600 kg (12350 lb)
13.6R38	128A8..............	750 mm (29.5 in.)	3860 kg (8510 lb)	3860 kg (8510 lb)
14.9R38	133A8..............	775 mm (30.5 in.)	4120 kg (9080 lb)	4120 kg (9080 lb)
16.9R38	141A8..............	800 mm (31.5 in.)	5150 kg (11350 lb)	5150 kg (11350 lb)
18.4R38	146A8..............	825 mm (32.5 in.)	5600 kg (12350 lb)	6000 kg (13225 lb)
13.6-46	6 PR..............	875 mm (34.4 in.)	3300 kg (7275 lb)	3300 kg (7275 lb)
420/85R24	137A8..............	625 mm (24.6 in.)	4940 kg (10890 lb)	4940 kg (10890 lb)
460/85R26	143A8..............	675 mm (26.6 in.)	5450 kg (12015 lb)	5450 kg (12015 lb)
420/85R30	140A8..............	700 mm (27.6 in.)	5000 kg (11025 lb)	5000 kg (11025 lb)
460/85R30	145A8..............	725 mm (28.5 in.)	5600 kg (12350 lb)	5800 kg (12785 lb)
420/85R34	142A8..............	750 mm (29.5 in.)	5300 kg (11685 lb)	5300 kg (11685 lb)
460/85R34	147A8..............	775 mm (30.5 in.)	5600 kg (12350 lb)	6150 kg (13560 lb)
480/70R34	143A8..............	750 mm (29.5 in.)	5450 kg (12015 lb)	5450 kg (12015 lb)
520/70R34	148A8..............	775 mm (30.5 in.)	5600 kg (12350 lb)	6300 kg (13890 lb)
340/85R38	133A8..............	750 mm (29.5 in.)	4120 kg (9080 lb)	4120 kg (9080 lb)
420/85R38	144A8..............	800 mm (31.5 in.)	5600 kg (12350 lb)	5600 kg (12350 lb)
460/85R38	149A8..............	825 mm (32.5 in.)	5600 kg (12350 lb)	6500 kg (14330 lb)
480/70R38	145A8..............	800 mm (31.5 in.)	5600 kg (12350 lb)	5800 kg (12785 lb)
520/70R38	150A8..............	825 mm (32.5 in.)	5600 kg (12350 lb)	6500 kg (14330 lb)
600/65R38	153A8..............	825 mm (32.5 in.)	5600 kg (12350 lb)	6500 kg (14330 lb)
320/90R42	139A8..............	800 mm (31.5 in.)	4860 kg (10715 lb)	4860 kg (10715 lb)
* Speed/radius index