I think you will find it depends on the weight of your caravan and whether or not it is single or dual axle. I am fairly sure as with tyres all wheels have a load rating. Landy
-- Edited by landy on Wednesday 4th of March 2015 08:57:00 PM
-- Edited by landy on Wednesday 4th of March 2015 09:03:27 PM
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The tyres must have a load rating that exceeds the maximum load that they can be required to carry when the van is loaded to the ATM.
The rims are the same.
The load rating of a rim will be marked on it. That is the first place to start.
Alloy rims have the advantage that they are lighter than steel rims.
That improves the suspension performance and increases your useful load allowance.
Most of the semis on the road use alloy rims these days for these reasons.