Tyre rotation for vans

I'm no expert however some tyres are 'Unidirectional' and must be used as the two service centres advise.
If Non-Unidirectional they can be used on any axle
Bridgestone advice

Paul

You wouldn't have directional tyres on a cvan they are for performance vehicles.
To even the wear from braking action rotation onto any axle, ie, reverse direction may more evenly wear the tyres.

As far as I know, since we went to radials they swap wheels front rear and vice versa on the same side.

I doubt very much that there is an industry standard ..... it there was it would be unreliable and unhelpful.

Any advantage in tyre rotation on any vehicle will depend on how that individual vehicle wears tyres.

IF a 4 wheel trailer is well designed and does not spend a lot of time in the city going around roundabouts ..... it is unlikley that there will be any advantage to tyre rotation, because the tyres will wear evenly and are best left where they are.

If on the other hand there are desgn flaws in the suspension, the vehicle does a lot of non straight line work in particular roundabouts ... there may be wear patterns, such as shoulder wear and scrubbing front or rear axle that may be addressed by tyre rotation.
AND that rotation may not just be wheel to wheel but turning the tyre on the rim.

If your vehicle wears the outside shoulder (common in some circumstances) changing the wheels around without rotation the tyre on the rim will help none.

On 4 wheel stand alone vehicles, there are a number of common tyre rotation schemes, in the guides and manuals ........ yeh there are arguments that they are unhelpfull and pointless on any cases.

On most of my vehicles in the last 30 odd years, they have had live beam rear axles ..... this presents the wheel square to the road the majority ( pretty much all) of the time ..... I have found that my rear tyres wear evenly over the surface of the tyre as long as my tyre pressures are correct ..... so removing them from where they are presents no advantage.
On the other hand the front tyres always wear and scrub on the edges, because of the suspension and turning geometry and the very work of turning the vehicle.

Some would get exciteted and say that they should be rotated to the back ... I do not believe that would give me any advantage in overall tyre wear or cost.

there may be advantages to rotating left for right, because of the roundabout factor and the scrubbing caused on the outside edge of the passenger side tyres.

I just fit a pair of new tyres to the front and the best of the remaining on the rear ...... 1/2 of the time that means leaving the rears where they are.

Any scheme of tyre rotation has to consider actual wear on that actual vehicle.

If you are realy concerned about maximum tyre life, paying attention to correct inflation, wheel alignment (if available) and in particular on trailers wear in the suspension bushings .... will save more tyre wear than rotation ever can.

cheers