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Where did 32 PSI come from? #4497064
08/24/17 02:46 PM
08/24/17 02:46 PM
Joined: Oct 2006
Posts: 8,004
OH
grampi Offline OP
grampi  Offline OP
Joined: Oct 2006
Posts: 8,004
OH
This seems to be the age old standard pressure for car tires, but it seems like every vehicle requires a different PSI, so I'm wondering where this came from. Did everyone just inflate their tires on all vehicles back in the old days?

Re: Where did 32 PSI come from? [Re: grampi] #4497069
08/24/17 02:52 PM
08/24/17 02:52 PM
Joined: Oct 2014
Posts: 3,896
Utah
CKN Offline
CKN  Offline
Joined: Oct 2014
Posts: 3,896
Utah
Didn't they use to check your tire pressure when you got fuel-back in the day?

Last edited by CKN; 08/24/17 02:53 PM.
Re: Where did 32 PSI come from? [Re: grampi] #4497077
08/24/17 03:02 PM
08/24/17 03:02 PM
Joined: Apr 2012
Posts: 3,159
Boston, MA
Bgallagher Offline
Bgallagher  Offline
Joined: Apr 2012
Posts: 3,159
Boston, MA
I always figured it was a middle of the road number for the average car tire.


2017 Chevy Traverse - 28k - Delco Dexos 1 and PF63
2014 Chevy Equinox - 22k - Delco Dexos 1 and PF457G
2015 GMC Terrain - 22k- Delco Dexos 1 and PF457G
Re: Where did 32 PSI come from? [Re: grampi] #4497078
08/24/17 03:03 PM
08/24/17 03:03 PM
Joined: Dec 2003
Posts: 9,800
Florida, Cape Coral
Eddie Online sleepy
Eddie  Online Sleepy
Joined: Dec 2003
Posts: 9,800
Florida, Cape Coral
Probably is the pressure that reflects the pressure recommended loading for the manufactures chosen tire, except the older Ford Explorer where the PR people got control. Ed


CX5 Touring 2.5L :-)
Re: Where did 32 PSI come from? [Re: grampi] #4497082
08/24/17 03:07 PM
08/24/17 03:07 PM
Joined: Sep 2010
Posts: 7,485
S California
OneEyeJack Offline
OneEyeJack  Offline
Joined: Sep 2010
Posts: 7,485
S California
In the old days when people actually survived without cell phones but still had electricity and self-starting cars, they had places for you to gas up called "service stations". You drove and ran over a hose that rang a bell. I human would come to your car and you would say something like fill it up with Ethyl and that's what the attendant would do along with checking your engine oil level, fan belt(s), radiator, P/S fluid, windshield washer fluid and tire pressure. No, honest it's true.

The 32 psi bit? It's better than 10-20 psi that was noticed when Ford Exploders were having tire problems. If you can't be bothered checking tire pressures than 32 psi by someone else it better than your method.

Re: Where did 32 PSI come from? [Re: grampi] #4497105
08/24/17 03:39 PM
08/24/17 03:39 PM
Joined: Dec 2003
Posts: 9,800
Florida, Cape Coral
Eddie Online sleepy
Eddie  Online Sleepy
Joined: Dec 2003
Posts: 9,800
Florida, Cape Coral
I was one of those guys who, when the bell rang, ran to your vehicle and asked how much gas, wiped your windshield and checked your oil. I waited for the tip but, it very seldom happened.. WARCO STATION in Rock Island ILL ~1955. Ed


CX5 Touring 2.5L :-)
Re: Where did 32 PSI come from? [Re: OneEyeJack] #4497114
08/24/17 03:47 PM
08/24/17 03:47 PM
Joined: Aug 2008
Posts: 2,080
Cali
Malo83 Offline
Malo83  Offline
Joined: Aug 2008
Posts: 2,080
Cali
Originally Posted By: OneEyeJack
In the old days when people actually survived without cell phones but still had electricity and self-starting cars, they had places for you to gas up called "service stations". You drove and ran over a hose that rang a bell. I human would come to your car and you would say something like fill it up with Ethyl and that's what the attendant would do along with checking your engine oil level, fan belt(s), radiator, P/S fluid, windshield washer fluid and tire pressure. No, honest it's true.

The 32 psi bit? It's better than 10-20 psi that was noticed when Ford Exploders were having tire problems. If you can't be bothered checking tire pressures than 32 psi by someone else it better than your method.

And the gas pumps would ring for every gallon and on the side of the pump was a see thru bubble with little balls that would swirl around as the gas would flow thru, gas was 15/25 cents depending on the grade, loved when we would pull into the station and the smell of gas would greet you, mom would go to a certain station and collect stamps to redeem for silverware or dishware, you were greeted with a Yes Ma'm or Yes Sir. Those were honestly the "The Good Ole Days. cheers

Re: Where did 32 PSI come from? [Re: grampi] #4497115
08/24/17 03:48 PM
08/24/17 03:48 PM
Joined: Jan 2011
Posts: 2,943
PV Az
AZjeff Offline
AZjeff  Offline
Joined: Jan 2011
Posts: 2,943
PV Az
What does all this reminiscing about the good old days have to do with the question why was 32 psi a fairly universal inflation number back in the good old days?? Good question.

Bunch of dang geezers....

Full disclosure, I worked in an ARCO service station in the early 70s... and every once in a while destroyed a can of oil stabbing the spout in.


86 Samurai 1.3 leftovers
14 RAV4 2.5 5W-20 PP
16 Silverado 1500 4.3, DI, AFM 5W-30 PP

The most important thing to do in your life is to not interfere with someone else's life. - Frank Zappa

Re: Where did 32 PSI come from? [Re: grampi] #4497152
08/24/17 04:43 PM
08/24/17 04:43 PM
Joined: Aug 2015
Posts: 2,720
NC
BigD1 Offline
BigD1  Offline
Joined: Aug 2015
Posts: 2,720
NC
Not sure where it come from, but that was what we filled them at the full service station I was working at during the 70's oil embargo.


1992 Toyota Pickup--Formula Shell 10W-30--Fram PH3614
Re: Where did 32 PSI come from? [Re: grampi] #4497175
08/24/17 05:18 PM
08/24/17 05:18 PM
Joined: Mar 2016
Posts: 1,395
Western S.C. since 1996
CR94 Online content
CR94  Online Content
Joined: Mar 2016
Posts: 1,395
Western S.C. since 1996
There never was anything special about 32 psig. Back in those "good ole days" that the "geezers" recall, the most common pressure recommendation by car manufacturers was 24 psi. My father thought that was too low and wanted 30 in everything.


2011 Toyota Prius now at 92K
1981 Mazda GLC (323) retired at 606K
1972 Subaru DL retired at 190K
1954 Chevrolet retired at 121K
Re: Where did 32 PSI come from? [Re: grampi] #4497176
08/24/17 05:18 PM
08/24/17 05:18 PM
Joined: Jun 2016
Posts: 93
Watertown, NY USA
wheelman1991 Online sleepy
wheelman1991  Online Sleepy
Joined: Jun 2016
Posts: 93
Watertown, NY USA
32 psi? Because that was what the recommended pressure was on the sidewall off bias ply tires.


1991 Volvo 240 DL, Canadian spec car imported into the States. $400 Barn find.
Re: Where did 32 PSI come from? [Re: grampi] #4497180
08/24/17 05:21 PM
08/24/17 05:21 PM
Joined: Feb 2003
Posts: 3,421
Somewhere in the US
CapriRacer Offline
CapriRacer  Offline
Joined: Feb 2003
Posts: 3,421
Somewhere in the US
Originally Posted By: grampi
This seems to be the age old standard pressure for car tires, but it seems like every vehicle requires a different PSI, so I'm wondering where this came from. Did everyone just inflate their tires on all vehicles back in the old days?


Because the tires that preceeded the current P metric radials had 32 psi as the max - and a lot of people went by what was on the tire (kind of like now!). Please note: Placards were a new thing in that era.


CapriRacer

Visit my web site: www.BarrysTireTech.com
Re: Where did 32 PSI come from? [Re: grampi] #4497308
08/24/17 08:27 PM
08/24/17 08:27 PM
Joined: Dec 2014
Posts: 1,429
NY, USA, etc.
oilpsi2high Offline
oilpsi2high  Offline
Joined: Dec 2014
Posts: 1,429
NY, USA, etc.
The engineers decided that it was the best pressure for handling, comfort, and wear.

Re: Where did 32 PSI come from? [Re: wheelman1991] #4497334
08/24/17 09:03 PM
08/24/17 09:03 PM
Joined: Sep 2015
Posts: 5,849
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 5,849
Kalifornia Kollective
Originally Posted By: wheelman1991
32 psi? Because that was what the recommended pressure was on the sidewall off bias ply tires.


Bingo, it was all about bias ply construction and the upper working limit. When 32 was the standard, no one in the USA knew much about radials. Michelin had not made the scene, much less Sears big push ...


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: Where did 32 PSI come from? [Re: grampi] #4497375
08/24/17 09:59 PM
08/24/17 09:59 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
Clovis, CA
I like mine at 36, that way it gives me room for air loss.

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