Trailer Load & Tyre Ratings
A table covering popular trailer sizes is given below.
| Tyre size |
Max speed |
| 100 km/h |
60 mph |
130 km/h |
81 mph |
| Axle Load kg |
PSI/Bar |
Axle Load kg |
PSI/Bar |
| 400 x 8 (4ply) |
540 |
60/4.2 |
- |
- |
| 400 x 8 (6 ply) |
680 |
75/6.2 |
- |
- |
| 500 x 10 (6 ply) |
860 |
50/3.5 |
- |
- |
| 5.20 x 10 |
616 |
32/2.2 |
- |
- |
| 145 x10 |
693 |
35/2,4 |
630 |
32/2.2 |
| 145 x 10 (R/F) |
781 |
42/2.9 |
710 |
39/2.7 |
| 140/70 x 12 |
1060 |
62/4.3 |
- |
- |
| 155/70 x 12 |
1800 |
90/6.2 |
1636 |
87/6.0 |
| 145 x 13 |
825 |
53/3.7 |
750 |
32/2.2 |
| 155 x 13 |
935 |
35/2.4 |
850 |
32/2.2 |
| 155 x 13 (R/F) |
1045 |
42/2.9 |
950 |
39/2.7 |
| 165 x 13 |
1045 |
36/2.5 |
950 |
33/2.3 |
| 165 x 13 (R/F) |
1166 |
45/3.1 |
1060 |
42/2.9 |
| 175 x 13 |
1166 |
36/2.5 |
1060 |
33/2.3 |
| 175 x 13 (R/F) |
1276 |
45/3.1 |
1160 |
42/2.9 |
| 175 x 13 (6ply) |
1407 |
54/3.75 |
1340 |
54/3.75 |
| 183 x 13 (6ply) |
1500 |
54/3.75 |
1460 |
54/3.75 |
| 185/70 x 13 (Avon 950) |
1900 |
87/6.0 |
1800 |
87/6.0 |
| 175 x 14 (6ply) |
1491 |
54/3.75 |
1420 |
54/3.75 |
| 175 x 14 (8ply) |
1628 |
65/4.5 |
1550 |
65/4.5 |
| 185 x 14 (6ply) |
1628 |
54/3.75 |
1550 |
54/3.75 |
| 185 x 14 (8ply) |
1785 |
65/4.5 |
1700 |
65/4.5 |
| 195 x 14 (6ply) |
1785 |
54/3.75 |
1700 |
54/3.75 |
| 195 x 14 (8ply) |
1995 |
65/4.5 |
900 |
65/4.5 |
| 600 x 16 (6ply) |
1533 |
52/3.6 |
- |
- |
| 650 x 16 (6ply) |
1890 |
62/4.3 |
- |
- |
| 750 x 16 (6ply) |
2100 |
51/3.5 |
- |
- |
N.B - it is dangerous to inflate a tyre beyond maximum pressure
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