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Tyre Pressures

dmiller555 replied on 10/01/2017 15:17

dmiller555 profile picture Member

dmiller555

Caravanner from Northamptonshire

Posted on 10/01/2017 15:17

I have two questions:

I wonder how many with caravans change their tyre pressures between towing and not towing?

I ask because the recommended tyre pressures for my VW Passat varies between 33psi all round for two people to 36 front and 41 rear when fully laden with 4 people and luggage, which is quite a difference.

I have little idea what will constitute correct pressure when towing with two people plus luggage in the car and 75kg noseweight so I'm currently using 35psi front and 40psi rear, does that seem about right?

 

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EmilysDad replied on 16/07/2019 00:29

EmilysDad profile picture Member

EmilysDad

Caravanner
Posted on 15/07/2019 21:23 by Michael Lyon

I think many folk are forgetting that the front tyres need the max pressure too .. there's a very heavy load on them when breaking and that's when I want best grip.  So, please suffer a slightly more taught ride and be safe.  It might also improve your mpg.

Posted on 16/07/2019 00:29

 ..... braking 😉

Cornersteady replied on 16/07/2019 16:41

Cornersteady profile picture Member

Cornersteady

Caravanner from Tyne & Wear
Posted on 15/07/2019 21:23 by Michael Lyon

I think many folk are forgetting that the front tyres need the max pressure too .. there's a very heavy load on them when breaking and that's when I want best grip.  So, please suffer a slightly more taught ride and be safe.  It might also improve your mpg.

Posted on 16/07/2019 16:41

actually over inflated tyres have less grip and therefore less stopping power and also lead to more wear in the centre.

ocsid replied on 16/07/2019 19:34

ocsid profile picture Member

ocsid

Caravanner from Hampshire

Posted on 16/07/2019 19:34

IMO, the really important aspect of increasing, particularly the tow vehicle's rear tyre pressure, is to increase the overall lateral stiffness.

This stiffness being a fundamental "driver" in improving the whole unit's stability.

The odd extra sub 100 kgs load added is of relatively little relevance, that's only the value of a single fat person on the rear seat.

EmilysDad replied on 16/07/2019 19:44

EmilysDad profile picture Member

EmilysDad

Caravanner
Posted on 16/07/2019 19:34 by ocsid

IMO, the really important aspect of increasing, particularly the tow vehicle's rear tyre pressure, is to increase the overall lateral stiffness.

This stiffness being a fundamental "driver" in improving the whole unit's stability.

The odd extra sub 100 kgs load added is of relatively little relevance, that's only the value of a single fat person on the rear seat.

Posted on 16/07/2019 19:44

100kg = 'fat'? surprisedsurprised I'm not far from 100 (maybe 95) but am far from fat! tongue-out

Tigi replied on 16/07/2019 20:35

Tigi profile picture Member

Tigi
Posted on 15/07/2019 21:23 by Michael Lyon

I think many folk are forgetting that the front tyres need the max pressure too .. there's a very heavy load on them when breaking and that's when I want best grip.  So, please suffer a slightly more taught ride and be safe.  It might also improve your mpg.

Posted on 16/07/2019 20:35

Its interesting to note tyre pressures on a current Volvo XC60 are 1-3 passengers 230 back and front, 3-Max load is 270 back and front including towing and an ECO Pressure is 270 back and front (disregard no units). My point being it suggests that there is no reason why you shouldn't leave tyres at your towing pressure whilst away, the only negative effect is the harder ride.

replied on 16/07/2019 20:55

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Posted on 16/07/2019 20:35 by Tigi

Its interesting to note tyre pressures on a current Volvo XC60 are 1-3 passengers 230 back and front, 3-Max load is 270 back and front including towing and an ECO Pressure is 270 back and front (disregard no units). My point being it suggests that there is no reason why you shouldn't leave tyres at your towing pressure whilst away, the only negative effect is the harder ride.

Posted on 16/07/2019 20:55

The user and all related content has been Deleted User

EmilysDad replied on 16/07/2019 22:23

EmilysDad profile picture Member

EmilysDad

Caravanner
Posted on 16/07/2019 20:35 by Tigi

Its interesting to note tyre pressures on a current Volvo XC60 are 1-3 passengers 230 back and front, 3-Max load is 270 back and front including towing and an ECO Pressure is 270 back and front (disregard no units). My point being it suggests that there is no reason why you shouldn't leave tyres at your towing pressure whilst away, the only negative effect is the harder ride.

Posted on 16/07/2019 22:23

The last time I up'd my tow car's tyre pressures I nipped into town on the increased pressures  ...... it was all over the place, verging on dangerous. I just leave my tow cars tyre pressure on the min now

penguinpete replied on 13/07/2020 21:44

penguinpete profile picture Member

penguinpete

Caravanner from Suffolk

Posted on 13/07/2020 21:44

Hi guys I'm really confused as I have a 2017 4x4 korando great tow car but psi in all 4 tyres 32, that is all it says in the book, nothing about towing or fully laden or even ECO pressures. If someone who has a korando could advise or even someone who knows I would be really grateful.

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