charles wrote:

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tyre pressure for 18 ft dual wheel Windsor pop top van 1450 tare currently running at 37 lbs is that in the ball park thanks

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 Hi Charles and welcome to the forum. We have a 2600KG (ATM)  20 foot van and run each tyre at 44 psi. Hope that's helpful. 

Cheers

Charles hi and welcome.

The rule of thumb is the same as your tow vehicle drive tyres, to go a bit further checking your tyres pressure after a couple hours running your tyres pressure should be about 4 psi higher. If it is higher then 4 psi you will need to increase the tyre pressure, now if it's not then a small decrease is in order. There is other ways possibly talk with a tyre technician but be careful if he pucks number from any where he will not have clue.

Like a friend put a couple of new tyres on his van, tyre fitter said 65 as on the side of tyre that is so dumb. You know I can not get him to lower them because the tyre man said. They are only car tyres.

my own single axle van weighing in at sub 2000 kgs I run 42 psi took a couple of weeks, about 900 ks of testing and now I am happy with my pressures.

Hope this helps. Ralph.

ps. My brother is a race car engineer and using his experience has helped.

blaze wrote:

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I just run 50 pound around, vehicle and van, never had a problem with these pressure.
cheers
blaze

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Hi Charles,

We have been towing the same tandum rig 2000kg  for years now. pump em up to 55psi cold. We run at 100kmph over long long distances to  Nth West WA over a seven day period 5400km each way. Never had a blow out / flat tire.

Before this, lower pessures I was continually doing tyres and they were all red hot from flexing side walls.

Lite truck radials tyres are the go. Check the max cold pressure on the side wall of your tyres first.

Jim & Lambie