CARAVAN TYRE PRESSURS??

What sort of trailer? what sort of weights are you talking??

Better answers would be from the Campertrailer list ....458 members now!

Peter ..we have a 17ft Avan dual axle poptop and we were adised by the dealer that we bought it from to run the tyres at 50lb psi..we have only done a cuple of trips with it as yet but all seems to be well with the tyres...cheers

I run my caravan tyres (Kumho Roadventure AT 245/75 16) at 46 psi. Van weighs about 2000 KG fully laden with about 200 KG on the ball. 46 psi fits nicely with the Michellin 4 psi rule-of thumb and tyre wear seems okay to date - but tyres have done only about 3000 KM. Tyre states max load of about 1200 KG (from memory) per tyre is at 65 psi. In my setup each tyre is supporting about 900 KG.

Cheers - Kevin

Required tyre pressure varies with the weight-carrying rating of the tyre (see the markings on the sidewall or talk to your tyre man), and the actuaL weight on each tyre (put the fully loaded van on a weigh-bridge - they will weigh it attached to the vehicle and unattached to give you the weight on the wheels and the actual weight on the ball). the compliance plate does not always give the accurate figures, for various reasons.
It is suggested that, once you have the actual weight on each tyre, add 20% extra weight on rough roads, and use that as the weight each tyre has to support. Most tyres give a load rating and the maximum weight rcommended recommended for that tyre. The more air in the tyre, the bigger load it can carry - i.e. a bigger tyre will carry more weight for a given pressure than a smaller one. Light truck tyres usually have stronger walls than a passenger tyre of the same size and can therefore handle a higher pressure and therefore more weight.
It is usually considered that pressures in van tyres over about 47psi cause more jarring to the vans innards than desirable, so if your tyres need more than that, talk to your tyre man. More information can often be found in Tom Olthoff's "caravan Clinic" in Caravan World.
Happy travelling.
Jim

Jim has said it all for you, however if you plan to go take your van off bitumen at all then on my Roadstar (tandem-tyres at 45psi with 2 tonnes, which is VERY kind to its innards) ran on 30psi on the rougher stuff BUT i\I kept the speed down to 65-75 kph. Back on the Hwy a GOOD compressor (ARB) SOON PUT THEM BACK tp 45psi. Never a problem or flat in 90,000kms
Safe and Happy Travelling

thanks very much for your kind advice - i have some homework to do regards peter