Only the maximum pressure and maximum load is printed on the side of any tyre, however from this you can calculate your vans correct tyre pressure for the tyre fitted.
Although the two pressures quoted above are widely apart, both could be correct if tyres of different construction are fitted to the same weight van.
So the answer to the question is to first find out what the maximum weight of the van is. Next is to check that the tyres fitted are in good condition with no cracks in the side walls or between the tread pattern and that they are less than seven years old at the very most, five would be better. Also that the tyres are matching, you cannot use odd tyres.
Assuming all the above is ok, then find the maximum load and maximum pressure from the side wall and add the two or four tyres maximum loads together.
Now multiply the vans maximum weight by one tyre pressure and divide it by the sum of the tyre load
eg. single axle van maximum weight 1350kg, tyres 730kg at 65psi
1350 x 65 / (2x730) or 1460 = 60psi
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Topic: Tyre pressures.
