We have just changed our car to a chevrolet orlando and the manual only tells us the tyre pressure when not towing. Having searched on the net we can't find the tyre pressure for towing, anyone know where we could look for the answer? Thank you. Ellen.

Ellen. We have moved this thread as you originally posted it in the "Links" section so nobody could answer it.
Eribafolk Admin.

Looking at their website

http://www.chevrolet.co.uk

you can download a manual if you don't have one but reading it myself I can find no mention of towing a caravan and only a standard tyre pressure of 35 PSI although it does state that tyre pressures should be on a label on the front left door frame

manual download page

http://www.chevrolet.co.uk/owners-area/vehicle-manuals.html

The only other thing I can suggest is that you ask them

contact page

https://www.chevrolet.co.uk/contact/contact.html

Edit just noticed you already have the manual

Thank you.

I must admit that I've never bothered to alter tyre pressures when towing. Usually it's just a couple of PSI different which is within the margin of error on gauges anyway. I've never felt any untoward effects and if you're being that punctilious you have to drop the pressure after the tow and then reinflate for an onward/return journey.
The other source of pressure information is your tyre manufacturer who may be easier to contact. I believe there is a standard formula for working out tyre pressures based on weight and dimension of the tyre but I've never tried it

There are usually tyre pressures printed by the door pillar or down on the door sill on the drivers side,
or on the inside of the petrol cap, but they will be there.
It may be they do not increase the pressures as they are suitable for full load

Front tyre pressure : 2.4 bars Rear tyre pressure : 2.4 bars
Front tyre pressure (loaded vehicle) : 2.4 bars Rear tyre pressure (loaded vehicle) :2.4 bars

You usually find that the towing tyre pressures are the same as the loaded vehicle pressures so it's likely that Chevrolet just missed off the bit about it applying to caravans.

I know my Kia handbook and Mrs SDA's Toyota handbook quote a load weight above which a couple of extra pounds should be added to the rear tyres and this applies to towing as well.

If they are as Rod says then I suspect there's no need for adjustment. However I've read of people that bump their tyre pressures up for towing even though the handbook says don't bother and they swear it improves the towing performance. All subjective and not very scientific though.

I arrived at a site just behind another caravanner we had followed for miles.
Their caravan had wandered about a fair bit and seemed to shake its head
a lot, as we waited in reception the bloke started moaning about the caravan.
He had loaded it correctly, by the book, tyre pressures were correct etc.
I asked had he altered his tow car tyre pressures? his answer .....
No did he need to?
Glancing out of the window, I could see his tyres were running soft which
would account for his caravan shaking the back of the tow car.
Not only do you get a shimmy with soft tyres, your tyres overheat and could
possibly cause a failure.

Found the sticker on the door sill and it says 35psi comfort and 39 Eco which I expect means laden.

Eco; ..... it used to be that during petrol shortages, tyres were inflated +2lbs or so
to decrease the rolling resistance and stretch the mpg out