Fr 150 tdi tyre pressure 45psi ???

[justin_cupra]

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

The information contained in this message may be confidential and is intended to be exclusively for the addressee. Should you receive this message unintentionally, please do not use the contents herein and notify the sender immediately by return e-mail.

Interesting....I guess they are the professioanls after all!

 

[Willie]

Thats really surprising and very interesting
Do you fancy trying to pin them down to an actual pressure?
Have they already given you one?

 

[barryg]

Thats really surprising and very interesting
Do you fancy trying to pin them down to an actual pressure?
Have they already given you one?

i replyed to them asking to clarify their recomended pressure fot the car unloaded. . wait and see

 

[Willie]

Cool

 

[Dyscontinued]

30 definately too low, why you at that? If it says 33 in the fuel cap go with that.

As for the reply from vredestein, insteresting. I do think my mpg's down since deflation of mine, will put them up again this weekend.

 

[sjtscott]

33psi all round on my Cupra 17s, running same recommended pressure.. currently have F1 GSD3s fitted.

 

[barryg]

i replyed to them asking to clarify their recomended pressure fot the car unloaded. . wait and see

the reply, I have to say im impressed with their customer service....
Im going to keep it at 40 front 43 rear, ballance between comfort and handeling, 45/48 i find to hard. See below interesting.


Hello Barry,

The car manufacturer advices different tyre pressures for unloaded and for full load/high speed.
Vredestein always advices to use the pressure for the full load/high speed, this because as mentioned before, we focus more on handling and safety than on comfort.
Also not many drivers check there tyre pressure often enough, and will not change the tyre pressure before they fully load the car.
Now you drive with 40 psi allround, I would advice to use to proportion between front and rear, so 40 psi front and 43 rear.
Using the pressure 45 front and 48 rear will not result is less contact area with the road.

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

-----Oorspronkelijk bericht-----
Van: barry graham [mailto:[email protected]]
Verzonden: maandag 15 oktober 2007 21:50
Aan: TIC
Onderwerp: RE: Your question to Vredestein


Kuno

Thank you for the reply it is very informative. Just to clarify, with the car unloaded (empty) the tyre pressures stated on the website (45 front and 48 rear) are correct for a seat leon fr 150 1.9tdi with 225 45 zr 17 94w ultrac fitted. I have now the pressures at 40psi (up from 32psi) all round and find a notable difference in the responsiveness of the steering, there seems to be less movement in the tyre wall. I just want to be sure the tyre is making full contact with the road at 45/48psi

Rgds
Barry

 

[skahigh]

i know they are a tyre manufacturer but still....this is contrary to everything i have EVER been told about tyre pressures!

 

[Willie]

i know they are a tyre manufacturer but still....this is contrary to everything i have EVER been told about tyre pressures!

Me 2
I always thought that the front pressure was to be higher due to the weight (engine)
Getting more confused now and will get intouch with good year to see what they have to say about Eagle F1 GSD3's
I came into this thread thinking I knew a bit but now starting to doubt myself

 

[barryg]

Me 2
I always thought that the front pressure was to be higher due to the weight (engine)
Getting more confused now and will get intouch with good year to see what they have to say about Eagle F1 GSD3's
I came into this thread thinking I knew a bit but now starting to doubt myself

ya find out what goodyear have to say, would be interesting if they said something similar..
I would take what the tyre manufacturer says over the car manufacturer. They have carried out extensive testing on their product and know it better than the car manufacturers.

 

[skahigh]

ya find out what goodyear have to say, would be interesting if they said something similar..
I would take what the tyre manufacturer says over the car manufacturer. They have carried out extensive testing on their product and know it better than the car manufacturers.

but how do you know they tested it on a car the shape, weight and power of a leon? maybe they tested it on a people carrier!

tyres behave differently in different conditions and the car manufacturer is going to know the optimal pressure for the performance of THEIR vehicle.

 

[roscupra]

I'm running Federal 595's 225/45 R17 91V on the front,max 36 psi
and Scudo Stunner 225/45 R17 94W on the rear,max psi 51

Q: will this effect handling due to psi difference font and rear

 

[barryg]

I'm running Federal 595's 225/45 R17 91V on the front,max 36 psi
and Scudo Stunner 225/45 R17 94W on the rear,max psi 51

Q: will this effect handling due to psi difference font and rear

welcome roscupra whoever you are..... I would keep the differential between back and front about 3 psi, higher to the rear if the car is loaded.... In your case id put 33 front and 36 back... or just keep to the guide lines on the filler cap..

 

[roscupra]

welcome roscupra whoever you are..... I would keep the differential between back and front about 3 psi, higher to the rear if the car is loaded.... In your case id put 33 front and 36 back... or just keep to the guide lines on the filler cap..

not so bad, hey...