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These days tire pressures are generally much higher than they used to
be, also for radial tires.
In the 60's-70's advised tire pressures for radial tires were much less
than today, 1,8-25psi was quite normal. These days however tire
pressures are nearly always higher than 28psi and sometimes as high as
45+ psi, depending on speed and load. I am not sure if this is caused by
the use of different materials/techniques or different insight but also
consider that modern cars are heavier.
For relatively light cars like a AH 30psi is perfect as a basis to
start, than just lower or raise the pressure with small amounts to find
the optimum. For reasonably light steering keep a minimum of 30psi in
the front tires, especially if you have wider section tires. There is no
sense to go beyond 40psi.
It is a question of ride comfort, steering effort and road holding
(understeer and oversteer) so play around with different pressures in
the front and the rear until you have found what works for you.
In most cars I use 30psi in the front and up to 45psi in the rear,
depending on the load and expected speed en route.
Kees Oudesluijs
Op 24-10-2016 om 12:01 schreef Michael Oritt:
> I'm with Steve and use 30 psi all around in the Michaelin XAS's on my 100.
>
> Best--Michael Oritt
>
> On Sun, Oct 23, 2016 at 7:56 PM, BJ8Healeys <sbyers@ec.rr.com
>
> I use 30 psi all around with radial tires. The original tires were
> typically bias-ply, and 20/25 seems a bit low to me, too,
> especially for
> bias-ply.
>
> Steve Byers
> HBJ8L/36666
> BJ8 Registry
> AHCA Delegate at Large
> Havelock, NC
>
>
>
> -----Original Message-----
> From: Healeys [mailto:healeys-bounces@autox.team.net
> Sent: Sunday, October 23, 2016 3:49 PM
> To: Healey List
> Subject: [Healeys] pressure
>
> Well, at the risk of starting a never-ending thread, what's the
> consensus on
> tire pressure for my BJ8? I will be doing mostly local driving,
> certainly
> not racing (!), and will be setting them cold. The book says
> 20/25, which
> seems low to me.
>
>
> --
> Mike
>
> MGTD (long gone)
> BN1 (long gone)
> BN2-100M (gone but in good hands)
> BJ8
> http://autox.team.net/mailman/listinfo/healeys
> <http://autox.team.net/mailman/listinfo/healeys>
>
>
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<div class="moz-cite-prefix">These days tire pressures are generally
much higher than they used to be, also for radial tires. <br>
In the 60's-70's advised tire pressures for radial tires were much
less than today, 1,8-25psi was quite normal. These days however
tire pressures are nearly always higher than 28psi and sometimes
as high as 45+ psi, depending on speed and load. I am not sure if
this is caused by the use of different materials/techniques or
different insight but also consider that modern cars are heavier.<br>
For relatively light cars like a AH 30psi is perfect as a basis to
start, than just lower or raise the pressure with small amounts to
find the optimum. For reasonably light steering keep a minimum of
30psi in the front tires, especially if you have wider section
tires. There is no sense to go beyond 40psi.<br>
It is a question of ride comfort, steering effort and road holding
(understeer and oversteer) so play around with different pressures
in the front and the rear until you have found what works for you.<br>
In most cars I use 30psi in the front and up to 45psi in the rear,
depending on the load and expected speed en route.<br>
Kees Oudesluijs<br>
<br>
Op 24-10-2016 om 12:01 schreef Michael Oritt:<br>
</div>
<blockquote
cite="mid:CAPTa0B5GW5WNA-1HsV5RtBEtVbgt9_Jr0_zw59wQV8zDM7n8_w@mail.gmail.com"
type="cite">
<meta http-equiv="Context-Type" content="text/html; charset=UTF-8">
<div dir="ltr">
<div class="gmail_default">I'm with Steve and use 30 psi all
around in the Michaelin XAS's on my 100.</div>
<div class="gmail_default"><br>
</div>
<div class="gmail_default">Best--Michael Oritt </div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Sun, Oct 23, 2016 at 7:56 PM,
BJ8Healeys <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:sbyers@ec.rr.com";
target="_blank">sbyers@ec.rr.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote">I use 30 psi all around with
radial tires. The original tires were<br>
typically bias-ply, and 20/25 seems a bit low to me, too,
especially for<br>
bias-ply.<br>
<br>
Steve Byers<br>
HBJ8L/36666<br>
BJ8 Registry<br>
AHCA Delegate at Large<br>
Havelock, NC <br>
<span class=""><br>
<br>
<br>
-----Original Message-----<br>
From: Healeys [mailto:<a moz-do-not-send="true"
href="mailto:healeys-bounces@autox.team.net";>healeys-bounces@autox.<wbr>team.net</a>]
On Behalf Of Mike<br>
Sent: Sunday, October 23, 2016 3:49 PM<br>
To: Healey List<br>
Subject: [Healeys] pressure<br>
<br>
Well, at the risk of starting a never-ending thread,
what's the consensus on<br>
tire pressure for my BJ8? I will be doing mostly local
driving, certainly<br>
not racing (!), and will be setting them cold. The book
says 20/25, which<br>
seems low to me.<br>
<br>
<br>
--<br>
Mike<br>
<br>
MGTD (long gone)<br>
BN1 (long gone)<br>
BN2-100M (gone but in good hands)<br>
BJ8<br>
</span><a moz-do-not-send="true"
href="mailto:Healeys@autox.team.net";>Healeys@autox.team.net</a><br>
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href="http://autox.team.net/mailman/listinfo/healeys";
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