Correct Pressure for 215/45/17 tyres?
Paul Hutchings
cheers,
Paul
--
pa...@spamcop.net
Pooh Bear
Paul Hutchings wrote:
> Could someone confirm what is recommended on a '99 9-3 please?
No sticker anywhere ?
Graham
Colin Stamp
Couldn't find one anywhere on mine. It's got one now though...
It's 33 psi all round.
Cheers,
Colin.
Paul Hutchings
Colin Stamp <col.d...@stamp.plus.com> wrote:
> Couldn't find one anywhere on mine. It's got one now though...
>
> It's 33 psi all round.
Thanks Colin. Mind if I ask where you got that from?
I appreciate the advice, it's just that every thread I found on Google
seems to offer up anything between 32 and 40psi, one thread said Saab
themselves said 34psi and I'm curious why there would be so much
variation? I'm no expert but up to 8psi difference sounds drastic?
cheers,
Paul
--
pa...@spamcop.net
Dave Hinz
> I appreciate the advice, it's just that every thread I found on Google
> seems to offer up anything between 32 and 40psi, one thread said Saab
> themselves said 34psi and I'm curious why there would be so much
> variation? I'm no expert but up to 8psi difference sounds drastic?
Well, there's winter air, and summer air...
Really, though, some of it comes down to personal preference. I prefer
a bit high in the range because I don't mind a stiffer ride, and because
it reduces rolling resistance (improves gas mileage). Anywhere in that
range will be fine; 40 sounds high, but I'll go as high as 36 in my
summer tires. Winter, much lower...need that flex.
Dave Hinz
Colin Stamp
wrote:
>In article <oi9dl1ls9f0lrkad3...@4ax.com>,
I got it from the back cover of the manual for my '01 Aero - 33 psi
for all loads and all speeds up to 160 km/h or 42 psi for over
160km/h. Presumably, once you get to 160 km/h, you have to send
someone out to pump up the tyres a bit before you can accelerate
further...
I also looked it up on WIS, but that is a bit confused, saying that
215/45/17 tyres are only fitted to the Viggen. It then gives 32/29
(front/rear)psi for all loads and speeds up to 190km/h. Above that,
you need either 38/35(front/rear) or 42/39 (front/rear)psi depending
on which market your car was sold in. Obviously US air is somehow
different to UK air.
I trust that's as clear as mud? It certainly is to me. I'm sticking
with my 33 all round!
Cheers,
Colin.
Malt_Hound
Not to seem to be picky, but that is a pretty large increment, don't you
think? From 33psi to 42 in one fell swoop! I'd start with the 33psi
and then tweak it around from there.
--
-Fred W
James Sweet
"Paul Hutchings" <pa...@spamcop.net> wrote in message
news:paul-4CE68B.1...@news.ams.highwinds-media.com...
It depends on the tire, and should be marked on the sidewall. Higher
pressure gives improved handling and increased fuel economy at the expense
of a harsher ride. Go too high and the tread will deform and wear unevenly,
too low and the sidewalls will wear and crack. Personally I run mine at the
upper limit for best economy and I prefer a firm ride but it's mostly a
matter of preference, it's not rocket science.
Colin Stamp
Sounds a bit much to me too. I'm just reading it off the back of the
manual...
Cheers,
Colin.
Pooh Bear
James Sweet wrote:
> "Paul Hutchings" <pa...@spamcop.net> wrote in message
> news:paul-4CE68B.1...@news.ams.highwinds-media.com...
> > Could someone confirm what is recommended on a '99 9-3 please?
> >
> > cheers,
> > Paul
> > --
> > pa...@spamcop.net
>
> It depends on the tire, and should be marked on the sidewall.
!! ??
I thought that the pressure was very vehicle dependent. Although somewhere
around 30 psi is typical for many car applications.
Graham