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Re: [Healeys] tire pressure

To: Oudesluys <coudesluijs@chello.nl>
Subject: Re: [Healeys] tire pressure
From: Michael Oritt <michael.oritt@gmail.com>
Date: Tue, 25 Oct 2016 08:57:47 -0400
Cc: Austin Healey <healeys@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
References: <ef8d2325-f845-6807-8eb8-32f813736fcf@comcast.net> <vivq0ch6fknnd9dqilcame5og2t7ur2j3p@4ax.com> <AE98F7F7-47DA-4BB4-8E43-16896C6AE69E@att.net> <1172D75F944343A4B2A3315C215BA59C@LeonardPCPC> <7e289ed3-00c6-b6af-0d8e-7da6ce715eee@chello.nl>
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--94eb2c0758a65b618c053fb00f33

While measuring tire wear may give historically accurate information we
really want to get it right before the tire wears unevenly.

Consider doing what is recommended at:

http://www.fluke.com/fluke/uses/comunidad/fluke-news-plus/articlecategories/automotive/racetracktemp

Admittedly much of what the site touts is not relevant to street driving
but you can get the information you need to adjust tire pressures in real
time.  And while a contact probe may be most accurate I use an infrared
pyrometer to tell me whether tire temps are increasing too much or not
enough, etc. etc.

Best--Michael Oritt

On Tue, Oct 25, 2016 at 5:57 AM, Oudesluys <coudesluijs@chello.nl> wrote:

> This works fairly well on cross-ply tires, but on normal radial tires it
> only works when pressures are really way out.
> It will however work for discovering front wheel misalignment for both
> types of tire.
> Kees Oudesluijs
>
> Op 25-10-2016 om 0:55 schreef Len and/or Marge Hartnett:
>
>>
>> Likewise, you can use a tire depth gauge.  This will take more time but
>> over time it can indicate problems other than tire pressure.  Measure the
>> depth at the inner edge of the tire, the center of the tire, and the outer
>> edge of the tire.  If checked every six or so months, even wear over the
>> width of the tread would indicate a pressure that is providing full tread
>> contact (9-9-9).  If wear is greater at the edges, tire pressure is too low
>> (7-9-7). If wear is greater in the center, pressure it too high (9-7-9).
>> If one edge is wearing more than the other, wheel alignment could be a
>> problem (7-9-9 or 9-9-7).
>>
>> If you need an excuse to  go out and drive the car hard periodically, the
>> chalk method will be your first and best choice.  The depth gauge method
>> will make you check your tire pressure and wear close-up more often so I
>> recommend you do that, also.
>>
>> While you are down there, check the date on the tires and the condition
>> of the sidewalls.  If you are getting depth readings at or below the threes
>> or they are over 7 - 10 years old, you are overdue for new ones.
>>
>> (The Other) Len
>> Fairfield, CA, USA
>> 1967 AH 3000 MkIII, HBJ8L39031
>>
>>
>> ----- Original Message ----- From: "Richard J. Hockert" <rjhco@att.net>
>> To: "Mike" <phoenix722@comcast.net>
>> Cc: "Healey List" <healeys@autox.team.net>
>> Sent: Monday, October 24, 2016 6:04 AM
>> Subject: [Healeys] tire pressure
>>
>>
>> The correct tire pressure will vary widely from car to car, depending on
>>> tire type and static weight distribution.
>>>
>>> The correct method for determining proper tire pressure is as follows:
>>>
>>> 1. Use a soft white chalk to mark several vertical stripes across the
>>> tread and sidewall of each tire;
>>> 2. Drive the car hard, including tight turns;
>>> 3. Check the chalk marks. The marks should end at the knuckle where the
>>> tread and sidewall meet. Some tires have small triangles or arrows to mark
>>> the knuckle.
>>> 4. If the chalk remains on the tread, the pressure is too high. You are
>>> not using all of the tire.
>>> Chalk ends below knuckle, tire pressure is too low. The tire is rolling
>>> over too much.
>>>
>>> Best regards,
>>> Jim
>>>
>>>
>> _______________________________________________
>> Support Team.Net http://www.team.net/donate.html
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>>
>> Healeys@autox.team.net
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>>
>> Unsubscribe/Manage: http://autox.team.net/mailman/
>> options/healeys/coudesluijs@chello.nl
>>
>>
>>
>>
> _______________________________________________
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>
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>
>

--94eb2c0758a65b618c053fb00f33
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"color:rgb(51,51,255)=
">While measuring tire wear may give historically accurate information we r=
eally want to get it right before the tire wears unevenly.</div><div class=
=3D"gmail_default" style=3D"color:rgb(51,51,255)"><br></div><div class=3D"g=
mail_default" style=3D"color:rgb(51,51,255)">Consider doing what is recomme=
nded at: =C2=A0</div><div class=3D"gmail_default" style=3D"color:rgb(51,51,=
255)"><br></div><div class=3D"gmail_default"><font color=3D"#3333ff"><a hre=
f=3D"http://www.fluke.com/fluke/uses/comunidad/fluke-news-plus/articlecateg=
ories/automotive/racetracktemp">http://www.fluke.com/fluke/uses/comunidad/f=
luke-news-plus/articlecategories/automotive/racetracktemp</a></font><br></d=
iv><div class=3D"gmail_default"><font color=3D"#3333ff"><br></font></div><d=
iv class=3D"gmail_default"><font color=3D"#3333ff">Admittedly much of what =
the site touts is not relevant to street driving but you can get the inform=
ation you need to adjust tire pressures in real time.=C2=A0 And while a con=
tact probe may be most accurate I use an infrared pyrometer to tell me whet=
her tire temps are increasing too much or not enough, etc. etc.</font></div=
><div class=3D"gmail_default"><font color=3D"#3333ff"><br></font></div><div=
 class=3D"gmail_default"><font color=3D"#3333ff">Best--Michael Oritt=C2=A0<=
/font></div></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote"=
>On Tue, Oct 25, 2016 at 5:57 AM, Oudesluys <span dir=3D"ltr">&lt;<a href=
=3D"mailto:coudesluijs@chello.nl"; target=3D"_blank">coudesluijs@chello.nl</=
a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0=
 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">This works fairly we=
ll on cross-ply tires, but on normal radial tires it only works when pressu=
res are really way out.<br>
It will however work for discovering front wheel misalignment for both type=
s of tire.<br>
Kees Oudesluijs<br>
<br>
Op 25-10-2016 om 0:55 schreef Len and/or Marge Hartnett:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div><div class=3D"h5">
<br>
Likewise, you can use a tire depth gauge.=C2=A0 This will take more time bu=
t over time it can indicate problems other than tire pressure.=C2=A0 Measur=
e the depth at the inner edge of the tire, the center of the tire, and the =
outer edge of the tire.=C2=A0 If checked every six or so months, even wear =
over the width of the tread would indicate a pressure that is providing ful=
l tread contact (9-9-9).=C2=A0 If wear is greater at the edges, tire pressu=
re is too low (7-9-7). If wear is greater in the center, pressure it too hi=
gh (9-7-9).=C2=A0 If one edge is wearing more than the other, wheel alignme=
nt could be a problem (7-9-9 or 9-9-7).<br>
<br>
If you need an excuse to=C2=A0 go out and drive the car hard periodically, =
the chalk method will be your first and best choice.=C2=A0 The depth gauge =
method will make you check your tire pressure and wear close-up more often =
so I recommend you do that, also.<br>
<br>
While you are down there, check the date on the tires and the condition of =
the sidewalls.=C2=A0 If you are getting depth readings at or below the thre=
es or they are over 7 - 10 years old, you are overdue for new ones.<br>
<br>
(The Other) Len<br>
Fairfield, CA, USA<br>
1967 AH 3000 MkIII, HBJ8L39031<br>
<br>
<br>
----- Original Message ----- From: &quot;Richard J. Hockert&quot; &lt;<a hr=
ef=3D"mailto:rjhco@att.net"; target=3D"_blank">rjhco@att.net</a>&gt;<br>
To: &quot;Mike&quot; &lt;<a href=3D"mailto:phoenix722@comcast.net"; target=
=3D"_blank">phoenix722@comcast.net</a>&gt;<br>
Cc: &quot;Healey List&quot; &lt;<a href=3D"mailto:healeys@autox.team.net"; t=
arget=3D"_blank">healeys@autox.team.net</a>&gt;<br>
Sent: Monday, October 24, 2016 6:04 AM<br>
Subject: [Healeys] tire pressure<br>
<br>
<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
The correct tire pressure will vary widely from car to car, depending on ti=
re type and static weight distribution.<br>
<br>
The correct method for determining proper tire pressure is as follows:<br>
<br>
1. Use a soft white chalk to mark several vertical stripes across the tread=
 and sidewall of each tire;<br>
2. Drive the car hard, including tight turns;<br>
3. Check the chalk marks. The marks should end at the knuckle where the tre=
ad and sidewall meet. Some tires have small triangles or arrows to mark the=
 knuckle.<br>
4. If the chalk remains on the tread, the pressure is too high. You are not=
 using all of the tire.<br>
Chalk ends below knuckle, tire pressure is too low. The tire is rolling ove=
r too much.<br>
<br>
Best regards,<br>
Jim<br>
<br>
</blockquote>
<br>
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