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  Good tire pressure?

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Author Topic:   Good tire pressure?
Fastback68
Gearhead

Posts: 1272
From: Sucat, Paranaque, Philippines
Registered: Jul 99

posted 03-11-2002 07:24 PM     Click Here to See the Profile for Fastback68   Click Here to Email Fastback68     Edit/Delete Message   Reply w/Quote
I usually get my tires filled to 30 psi up front (302) and 28 psi rear. Then I was reading a magazine article last night from 1968 in which they compare a range of muscle cars, all with big blocks. All of them had 24 psi front and back except the Stang with a 390 that had 26 front and 24 rear. Have I been putting too much pressure in all this time? These are standard tires, BTW.
Thanks!
Simon

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Hotdiggydog
Journeyman

Posts: 8
From: Warren, Ohio
Registered: Feb 2002

posted 03-11-2002 08:30 PM     Click Here to See the Profile for Hotdiggydog   Click Here to Email Hotdiggydog     Edit/Delete Message   Reply w/Quote
As an employee of a major tire company I am inclined to tell you to stick around 30 psi. If you really want to question it call the manufacturer of the tire and ask them. Riding on 24 psi is way to low. Today's tires won't handle a psi that low without significant wear in the shoulder. Like I said without knowing the brand and type of tire I would urge you to call the manufacturer.

-John

[This message has been edited by Hotdiggydog (edited 03-11-2002).]

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1trickpony
Gearhead

Posts: 101
From: Escondido, Ca
Registered: Oct 2001

posted 03-11-2002 10:50 PM     Click Here to See the Profile for 1trickpony     Edit/Delete Message   Reply w/Quote
Don't forget that back in '68 they were using bias-ply tires. That would be the difference in pressures as I would see it. I imagine you are now using radials on your car. If not then please disregard my post.

Dave

------------------
1969 "S" code Mach1

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Fastback68
Gearhead

Posts: 1272
From: Sucat, Paranaque, Philippines
Registered: Jul 99

posted 03-11-2002 11:53 PM     Click Here to See the Profile for Fastback68   Click Here to Email Fastback68     Edit/Delete Message   Reply w/Quote
Thanks guys! BTW, how does that bias-ply thing work? Could they handle lower pressures better? Or did they heat up quicker? Just guessing.

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steve'66
Gearhead

Posts: 5428
From: Sonoma,CA,USA
Registered: Mar 2000

posted 03-12-2002 12:01 AM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
The old bias ply tires reacted to air pressures much more than radials. Radials hold their shape when 1/2 or fully inflated. But they are less prone to blowing out when fully inflated. So run radials fully inflated!!

SteveW

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