My car handbook states that if the car is fully laden and towing a trailer. the tyres should be increased in pressure by 0.2bar.
Does this mean all four tyres as it doesn't state just the rear?
Generally when towing I just have one front seat passenger, occassionally one child in the back but not very often do I have all four of us.
One of our cars advises an increase for all four tyres, the other is rear only.
I would take your handbook text to mean all four. There are normally tyre pressure details on a label in the driver's door sill area. This may make things clearer.
Normally the increase in tyre pressure when towing should be applied to all four tyres but there will be a larger increase of air pressure in the rear ones to accomodate the caravan noseweight on the towball. Like 'Peridot' has said, the information should be on the driver's door sill or on older vehicles may be behind the fuel filler cap.
As a guide, the tyre pressures on my car (for a full load) increase by 3 psi. on the front and 6 psi. on the rear.
My new Passat pressures are 33 up to 36 psi front and 36 increased to 41 for towing. The ride is like solid bricks! Is there a technical reason for pumping them up so much?
The Renault Koleos is 33 Fr and 30 Rr increased to 36 and 33 for towing but it also says the maximum speed at max train weight and at those pressures is 60mph.
Anyone else seen this speed limit applied at MTW?
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Topic: Tyre pressure question
