the reply from vredestein,,
This is the answer from our Tyre Information Centre to your question:
The tyre pressure advice from Vredestein is always a litlle higher than set out by the car manufacturer. The reason behind this is we focus more on handling and safety characteristics than on comfort. Also the life span of the tyres will be longer and the fuel consumption and impact on the environment will be less.
Vredestein calculates the tyrepressure using the tyrepressure from the car manufacturer for full load and high speed.
Todays radial tyres will not have excess tyre wear in the centre of the tyre when using a higher tyre pressure.
TIP:
Our experience tells us that in general, people often drive with too low tyrepressures and don't check their tyres enough. In general car manufacturers advice lower tyre pressures than (we as a) tyre manufacturer do. Beware that too low tyre pressures cause much lower ability for a tyre to carry loads, it gives tyres a much shorter livespan and higher fuel consumption. Also comfort (handling, vibrations, noice) will deminish due to uneven wear. Our advice is to check your tyre pressure regularly, especially before long trips. The tyrepressure must be measured with cold tyres, this means less than 1 mile / 2 kilometer drive or waiting for the tyres to cool-down 1 hour or more after driving. Do never lower the tyrepressure of warm tyres, this could mean the pressure will drop below the minimum. The optimum pressure depends on load capacity, speed capacity of the car, safety and personal preferences like comfort and handling.
In order to get the greatest possible return on your tyres, it is recommended to change the position of your tyres about every 7.500 to 10.000 kilometres from front to rear and vice versa. Our advice is to rotate only between the front and the rear. The first rotation is therefore most important. When tyres are rotated, the inflation pressures must be adjusted for the tyres' new positions!
Old and aged tyres must be checked by a tyre specialist to ascertain their suitability for further use. In any case tyres should be checked if they are fitted to vehicles that are older than 6 years. Tyres should be replaced after 6 to 8 years.
We hope this answers your question. In case you have more questions, please don't hesitate to mail us, we are always prepared to answer them.
Kind regards,
Kuno Tanke
Tyre Information Centre
VREDESTEIN BANDEN B.V.
www.vredestein.nl
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