Tyre Pressures

On ford transit ( 2006-2014) the axel weight badge is located under the bonnet on the cross member in front of radiator beside the bonnet latch.
There is also a tyre sizing and pressure sticker located on the cab pillar beside the door latch.
A very quick database could be built if other vehicle owners posted similar info.
Rear tyre pressures will be higher due a heavier load than front axels

Rewritten and posted. It is one of those perennial topics which people ask so hopefully it will be useful.

As an interesting additional point, it would appear that anyone who uses CP tyres (camper specific) should have the rear tyres inflated to 80psi irrespective of axle load. I did not find an explanation for why, but it seems to be almost mandatory. I wonder is it the case that the sidewalls being of a bigger number of ply are not designed to flex as much. Any one got any knowledge on this?

Davy

Several years ago I got new Michelin camper tyres, and I emailed Michelin and was advised that the pressure for the back tyres is always 80psi. From my discussions I got the impression that this figure was what they deemed to be best practise for the strong sided camper tyres.
Franco

I run my MH. 4500kg tag axle at 80psi no problems. Had to buy a special tyre pressure gauge as the usual ones wouldn’t go up to 80psi

This is a minefield e.g. how heavy of a load, what roads are you running on, high speed motorway.or local A class and, at what speed etc etc. also what make of tyre, If you are like me on Michelin camping and at the front you have 5.5 bar and the back pressure can be determined by using any weighbridge ,Fully load and weigh the whole van and then the front only ,then after subtracting one from the other you will see what the back is carrying.,If the rear axle is lighter than the front axle you can reduce the pressure to make the ride softer. I keep mine both about the same as I do long distance and want the best fuel returns. Under inflated tyres cause drag and therefore cost you money, This is for two axle vehicle for three its depending on the tandem rating.

To my mind the potential problems with alloy wheels on a camper outweigh the benefits. The vast majority of HGVs use steel wheels for good reason, the only vehicles that have alloys as standard are cars which aren't subject to the same loads as Campers or Vans.
I have 225/75-16 Continental Vanco Camper CP tyres and the info on the B pillar says 5.5 bar or 79.5Psi
They can run at lower pressures but only if you know with certainty the actual loads being carried by weighing.
If in doubt just run at the recommended pressures.

Lots of motorhome manufacturers send their new vans out with alloy wheels so these are fit for purpose,they are also fitted with steel type valves if necessary so they are available. If some individual devices to change from standard steel wheels then they must check the load rating of the alloys that they are going to fit as car type alloys are not suitable.