can anyone advise me whether or not if its correct to increase a tow vehicles tyre pressure when a caravan is added and by how much say if the ball weight is 180kg
can anyone advise me whether or not if its correct to increase a tow vehicles tyre pressure when a caravan is added and by how much say if the ball weight is 180kg
your tyre placard on your car should give recommended pressures for unladen and laden. Depends on tyre / rim size and profile so can't say much more now.
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Why is it so? Professor Julius Sumner Miller, a profound influence on my life, who explained science to us on TV in the 60's.
Two tyre retailers have said to inflate the rear tyres of our ute by an extra 5psi and the 'van manufacturer said the same for the van. So I run those tyres at 45psi, but let the air down when not towing to 40psi
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Cheers Bruce
The amazing things you see when nomading Australia
Post 1989 the ADR requires ALL vehicles to state tyre pressures clearly in an easily accessable place.
Tow vehicle will have a tyre placard either on the door, door jam, pillar or glovebox stating recommended tyre pressures based on speed and load.
Caravans manufactured after 1989 are required by law to have a compliance plate and as we all know in addition to your VIN this has your weights etc, but you may not know that it also must state your manufacturers recommended tyre sizes, minimum load and speed rating and tyre pressures.
The problem is, the plate in caravans can be way off mark for tyre pressure, as mine is. Plate says 35psi, but it's actually closer to 48psi in real life.
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Yes I am an agent of Satan, but my duties are largely ceremonial.
2x the 4psi rule or alternative if you have a TPMS watch your temperature, if it increases over and above the ambient temp plus 10C you need more air, if it stays at ambient you could drop a little air out. (Over inflated tyres cause excessive suspension wear and a harsher ride with wear in the centre of the tyre.) Some of those corrugations on gravel roads are caused by over-inflated tyres and bad suspension on vehicles.
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Brian & Nada retired and > "Ready to live the Dream" Live in the Shire!
76 series V8 Landcrab with Jayco Starcraft Outback Poptop
