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Tire Consumption and Pressure: Over-inflation to?

published: 09/03/10, 15:43
by Christophe
Tire pressure plays an important role in consumption.

We leave the overhaul and our tires were under inflated (1.6 / 1.7 instead of 2.2 / 2.4 anyway) ... I know I'm ashamed to have left tires in this state ...... not typed not typed!

But these tires have 18 months: they are snow tires that have served only 1 season ... so I did not think it could lose so much in these conditions ... me.

The guy put us 2.4 everywhere, since we consume 10% less according to the on-board computer ... :) :)

My question is simple: up to how much can you "exceed the recommended pressure" while remaining "secure"? : Cheesy:

published: 09/03/10, 15:47
by Macro
It depends on a lot of parameters ... The summer I would say 0.5 before 0.3 rear..But blunder cold and under the fleet ... Winters touch po a ca ptit con ...

published: 09/03/10, 15:47
by candas1
From what I read, the pressure advocated by car manufacturers is a noise-comfort-consumption compromise.

For safety, it is necessary to limit yourself to the pressure indicated in PSI on the tire itself.

I have already climbed up to almost 3 bar, of course it feels at the level of comfort.

EDIT: same, I only do this summer ...

published: 09/03/10, 16:19
by Did67
Another element: it promotes abnormal wear, in the middle of the tread of the tire (the latter being slightly more "bulging"), which will lead you to replace it faster - or to pay VPs.

published: 09/03/10, 16:35
by Christophe
Macro wrote:..The winters are po ...


Maieuh it's not me that touched is the garage! : Cheesy: : Cheesy:

Ok so if I understood correctly, we can say that we can put +0.4 in summer without "worries"?

Yes I also think that the "precaunisé" pressure is the compromise pressure ... I would add 2 other parameters:

"noise-comfort-consumption + safety / grip + tire wear".

All this to say that the checking of the pressure is often neglected ... I am the living proof of it ... I just realized that I was wasted by pure stupidity (do not check the pressure when I mounted the snow tires 4 months ago) about 25 L ... it's still 1 / 2 full is 450-500km ... !!

ps: the pressure indicated on the tires would not be the "burst" or "maximum load not to be exceeded" pressure? because a tire can be mounted on different vehicles which do not have the same mass ...

published: 09/03/10, 16:36
by Christophe
Did67 wrote:Another element: it promotes abnormal wear, in the middle of the tread of the tire (the latter being slightly more "bulging"), which will lead you to replace it faster - or to pay VPs.


Uh you speak over or under inflation? Because the under inflation uses much faster than the sur ...

Are there overfill PVs? I thought for the sub ...

published: 09/03/10, 17:19
by zorglub
the over inflation of 200 grams is a maxi
after, tire wear on the central band and road holding less because the contact surface decreases
on wet road the phenomenon is accentuated

published: 09/03/10, 17:33
by Christophe
I ride soft / economical / grandpa then the handling of road ...
: Cheesy:

On our Twingo the front tires made 70 000 km 8) 8)

published: 09/03/10, 17:54
by zorglub
On our Twingo the front tires made 70 000 km


yes but Belgium is not the savoie or there is a turn all 100 m
with my xiantia I do 45 000 km and it's not bad.
..but the grandpa does not roll like the beetles .....;

published: 09/03/10, 17:56
by Christophe
Uh another one who does not know the "legendary" state of the Walloon roads ... : Mrgreen: : Mrgreen:

Do you know what he tells you the Colorado potato beetle?

ps: we are not really in Belgium but in the Belgian Ardennes ...
and then a lot of the km of the twingo had been made in France ... but hey we will not spread my privacy huh!