Description
The 650/65R38 is a common size for these tractors to come on from factory, and is sometimes preferred to keep the overall height of the tractor down when height is a constraint or to keep the centre of gravity down when working on hilly ground. We’d usually recommend the 650/65R42 (set code A0012-JD-1) over the 650/65R38 as you’ll get much better tractor performance on the taller wheel for a relatively small price difference.
The maximum weights these tyres can carry is as follows:
Rear: 163D/166A8 4875kg up to 65kmh or 5300kg up to 40kmh
Front: 149D/152A8 3250kg up to 65kmh or 3550kg up to 40kmh
| Tyre maximum load (kg) at tyre pressure | ||||||||
| Rear: 650/65R38 BKT RT657 | ||||||||
| 0.6 bar | 0.8 bar | 1.0 bar | 1.2 bar | 1.4 bar | 1.6 bar | 2.0 bar | 2.4 bar | |
| 9 psi | 12 psi | 15 psi | 17 psi | 20 psi | 23 psi | 29 psi | 35 psi | |
| up to 10 kmh LT | 3140 | 3660 | 4120 | 4575 | 5035 | 5425 | 6015 | 6535 |
| up to 10 kmh HT | 2695 | 3145 | 3535 | 2930 | 4320 | 4660 | 5165 | 5610 |
| up to 30 kmh | 2695 | 3145 | 3535 | 2930 | 4320 | 4660 | 5165 | 5610 |
| up to 40 kmh | 2545 | 2970 | 3340 | 3710 | 4085 | 4400 | 4880 | 5300 |
| up to 50 kmh | 2460 | 2870 | 3230 | 3585 | 3945 | 4250 | 4715 | 5120 |
| up to 65 kmh | 2340 | 2730 | 3075 | 3415 | 3755 | 4050 | 4485 | 4875 |
| Tyre maximum load (kg) at tyre pressure | ||||||||
| Front: 540/65R28 BKT RT657 | ||||||||
| 0.6 bar | 0.8 bar | 1.0 bar | 1.2 bar | 1.4 bar | 1.6 bar | 2.0 bar | 2.4 bar | |
| 9 psi | 12 psi | 15 psi | 17 psi | 20 psi | 23 psi | 29 psi | 35 psi | |
| up to 10 kmh LT | 2095 | 2440 | 2745 | 3050 | 3355 | 3615 | 4010 | 4355 |
| up to 10 kmh HT | 1800 | 2095 | 2360 | 2620 | 2880 | 3105 | 3445 | 3740 |
| up to 30 kmh | 1800 | 2095 | 2360 | 2620 | 2880 | 3105 | 3445 | 3740 |
| up to 40 kmh | 1705 | 1990 | 2240 | 2485 | 2735 | 2950 | 3270 | 3550 |
| up to 50 kmh | 1640 | 1915 | 2155 | 2395 | 2630 | 2835 | 3145 | 3415 |
| up to 65 kmh | 1560 | 1820 | 2050 | 2275 | 2505 | 2700 | 2990 | 3250 |
LT: Low Torque
HT: High Torque