Go Back   The Ford Barn > General Discussion > Early V8 (1932-53)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 09-24-2020, 06:55 AM   #1
Jacques1960
Member
 
Jacques1960's Avatar
 
Join Date: Sep 2020
Location: Mount Desert, Maine
Posts: 80
Default 1938 Firestone whitewall tire pressure

Our 1938 Deluxe wagon has Firestone whitewalls; however, I cannot find the correct (or reasonably correct) inflation pressure. Would appreciate any guidance. Thank you
Jacques1960 is offline   Reply With Quote
Old 09-24-2020, 08:53 AM   #2
Zeke3
Senior Member
 
Zeke3's Avatar
 
Join Date: Dec 2014
Location: Columbus, IN
Posts: 335
Default Re: 1938 Firestone whitewall tire pressure

Back when I worked at a gas station, in the bias ply days, we used 28-32 psi for everything except truck tires, Volkswagens and Corvairs.
Zeke3 is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 09-24-2020, 09:34 AM   #3
Jacques1960
Member
 
Jacques1960's Avatar
 
Join Date: Sep 2020
Location: Mount Desert, Maine
Posts: 80
Default Re: 1938 Firestone whitewall tire pressure

Thank you
Jacques1960 is offline   Reply With Quote
Old 09-24-2020, 09:41 AM   #4
tubman
Senior Member
 
tubman's Avatar
 
Join Date: Dec 2013
Location: Minnesota, Florida Keys
Posts: 6,684
Default Re: 1938 Firestone whitewall tire pressure

You haven't told us if you have radials or bias plys. 32 is a decent general number for radials. Bias plys need less. Previously, I had a set of Firestone wide white bias plys on my '51 Ford. The factory sticker on the inside of the glovebox door on my very original car says 24 front and 21 rear. I know, it surprised me too.
Attached Images
File Type: jpg IMG_1755.jpg (54.6 KB, 25 views)
File Type: jpg IMG_1756.jpg (53.4 KB, 14 views)
tubman is offline   Reply With Quote
Old 09-24-2020, 10:01 AM   #5
tubman
Senior Member
 
tubman's Avatar
 
Join Date: Dec 2013
Location: Minnesota, Florida Keys
Posts: 6,684
Default Re: 1938 Firestone whitewall tire pressure

Here's what the owners manual says. In 1951, the "DeLuxe" (base) models came with 6.00 X 16 tires. Note the significantly higher pressure they call for. It's on the bottom of the right hand page. For those of you who don't want to strain your eyes or neck, it says :

...Size...Front Rear

6.70 X 15 24 21
6.00 X 16 28 25
7.10 X 15 25 30

(I believe the 7.10 X 15's were used on station wagons, thus the higher rear pressure.
Attached Images
File Type: jpg img013.jpg (47.6 KB, 17 views)

Last edited by tubman; 09-24-2020 at 10:07 AM.
tubman is offline   Reply With Quote
Old 09-24-2020, 10:13 AM   #6
Lawson Cox
Senior Member
 
Lawson Cox's Avatar
 
Join Date: May 2010
Location: Above the gnat line in Georgia
Posts: 5,208
Default Re: 1938 Firestone whitewall tire pressure

Sponsored Links (Register now to hide all advertisements)
Whwn I worked in a service station back in the dark ages, mid to late 40s, it was 32 lbs in 600 x 16s. When newer tires came out, I've forgotten the term they used for them, low pressure? it was 28 lbs. I still put 32 lbs in my tires til this day. (That is when I can squat down to check them. LOL.)
__________________
Life is like a roll of toilet paper. The closer to the end, the faster it goes.

It is better to be seen, than viewed.


"We sleep safe in our beds because rough men stand ready in the night to visit violence on those who would do us harm".
Lawson Cox is offline   Reply With Quote
Old 09-24-2020, 06:49 PM   #7
Talkwrench
Senior Member
 
Talkwrench's Avatar
 
Join Date: Aug 2012
Location: Perth, Western Australia
Posts: 2,532
Default Re: 1938 Firestone whitewall tire pressure

On my daily driven 35 pickup the fronts 5.50x16 I ran at 35, the rears 7.50x16 at 32. The front tyres are still in great condition after 6 years and would have years more left in them.
__________________
"Came too close to dying to stop living now!"
Talkwrench is offline   Reply With Quote
Old 09-24-2020, 07:51 PM   #8
tubman
Senior Member
 
tubman's Avatar
 
Join Date: Dec 2013
Location: Minnesota, Florida Keys
Posts: 6,684
Default Re: 1938 Firestone whitewall tire pressure

Again; radials or bias-ply? It does make a difference.

I am quite surprised that many of you suggest deviating from what Ford Motor Company recommends by a substantial amount. And that you seem to think there is no difference between radials an bias-plys.

Last edited by tubman; 09-24-2020 at 08:17 PM.
tubman is offline   Reply With Quote
Old 09-24-2020, 08:18 PM   #9
Will D
Senior Member
 
Will D's Avatar
 
Join Date: Feb 2020
Location: BC Canada
Posts: 211
Default Re: 1938 Firestone whitewall tire pressure

My firestone deluxe champion bias Ply whitewalls 6.50-16 say max 32 psi @ max load 1580lbs.
Will D is offline   Reply With Quote
Old 09-24-2020, 08:55 PM   #10
tubman
Senior Member
 
tubman's Avatar
 
Join Date: Dec 2013
Location: Minnesota, Florida Keys
Posts: 6,684
Default Re: 1938 Firestone whitewall tire pressure

Quote:
Originally Posted by Will D View Post
My firestone deluxe champion bias Ply whitewalls 6.50-16 say max 32 psi @ max load 1580lbs.
You have to remember that the car companies recommended the tire pressure that would yield the best handling and ride quality, while the tire companies recommended the pressure that would give the longest tire life.

While the car companies knew exactly which combination of automobile and tires would be in use, the tire companies had no idea how their tires were to be used.
tubman is offline   Reply With Quote
Old 09-24-2020, 09:05 PM   #11
Jacques1960
Member
 
Jacques1960's Avatar
 
Join Date: Sep 2020
Location: Mount Desert, Maine
Posts: 80
Default Re: 1938 Firestone whitewall tire pressure

Bias ply, my apologies; sounds like < 32 psi is the way to go. The genesis of the question has to do with seeing if correct inflation improves the sometimes “vague” tracking through corners or if this is just a fact of life with bias ply construction. I like the look of the Firestone bias whitewalls, but don’t want to add sway bars to an otherwise unmolested car.
Jacques1960 is offline   Reply With Quote
Old 09-24-2020, 09:36 PM   #12
Will D
Senior Member
 
Will D's Avatar
 
Join Date: Feb 2020
Location: BC Canada
Posts: 211
Default Re: 1938 Firestone whitewall tire pressure

My 1938 ford reference book says to keep tires inflated to 30psi. 1932-1948 Ford maintenance manual has spread sheet for specific psi for specific tire size. Hopefully the pics are clear enough to read.

Not Sure if I'd run 32psi as that is max rating. Personally I run 30 psi all around. Although the maintenance manual specifies 28 psi for my tire size 6.50-16-4. The amount of ply's play a part as well as size.



Attached Images
File Type: jpg Resized_20200924_192511_3215.jpg (65.2 KB, 23 views)
File Type: jpg Resized_20200924_191956_4631.jpg (43.4 KB, 23 views)
Will D is offline   Reply With Quote
Old 09-24-2020, 10:53 PM   #13
Lanny
Senior Member
 
Lanny's Avatar
 
Join Date: May 2010
Location: Mn
Posts: 1,769
Default Re: 1938 Firestone whitewall tire pressure

Tires, like most everything else, evolve and have improved over the years, so
the recommendations listed in your old car handbook, were for the tires made
at that time. Many of the new radials have a Max pressure of 44 and even 51#'s.

Look at the recommendations that the tire manufacture puts right on the tire,
and I generally run a few pounds less than the Max listed on the tire.
Use some common sense on how much less, generally 4 to 8#'s less, depending
on the weight of your car, and a couple #'s less in the rear than the front.

Here is an article about under inflated tires.

Driving on under-inflated tires is dangerous. According to the National
Highway Traffic Safety Administration, almost 1/3 of passenger cars, light
trucks and SUVs are being driven with at least one under-inflated tire.

Under-inflation is one of the leading causes of tire failure. If tire pressure
is too low, too much of the tire’s surface area touches the road, which
increases friction. Increased friction can cause the tires to overheat,
which can lead to premature wear, tread separation and blowouts.




.
__________________
I live on tuff street, the further ya go,
the tuffer they git,
I live in the last house on the block !!!
___________________________________________

You bet ya, I wear the pants in My family --------
So What, if She tells me which ones to wear ?
Lanny is offline   Reply With Quote
Old 09-25-2020, 05:33 AM   #14
Jacques1960
Member
 
Jacques1960's Avatar
 
Join Date: Sep 2020
Location: Mount Desert, Maine
Posts: 80
Default Re: 1938 Firestone whitewall tire pressure

This is incredibly helpful, thank you all
Jacques1960 is offline   Reply With Quote
Old 09-25-2020, 11:14 AM   #15
blucar
Senior Member
 
blucar's Avatar
 
Join Date: Jul 2010
Location: Ventura, CA
Posts: 1,987
Default Re: 1938 Firestone whitewall tire pressure

Quote:
Originally Posted by Lanny View Post
Tires, like most everything else, evolve and have improved over the years, so
the recommendations listed in your old car handbook, were for the tires made
at that time. Many of the new radials have a Max pressure of 44 and even 51#'s.

Look at the recommendations that the tire manufacture puts right on the tire,
and I generally run a few pounds less than the Max listed on the tire.
Use some common sense on how much less, generally 4 to 8#'s less, depending
on the weight of your car, and a couple #'s less in the rear than the front.

Here is an article about under inflated tires.

Driving on under-inflated tires is dangerous. According to the National
Highway Traffic Safety Administration, almost 1/3 of passenger cars, light
trucks and SUVs are being driven with at least one under-inflated tire.

Under-inflation is one of the leading causes of tire failure. If tire pressure
is too low, too much of the tire’s surface area touches the road, which
increases friction. Increased friction can cause the tires to overheat,
which can lead to premature wear, tread separation and blowouts.




.

Ditto..
I just responded to the same question (s) about tire pressure on '53 model year Chrysler. The owner of the vehicle was running 24 psi on bias ply tires, had questions why the car handled so poorly.
When I was in my late teens I went through a Standard Oil, Inc training school in order to go to work for the company.. Standard Oil really stressed tire safety and correct tire pressure.
The majority of the responses on the Mopar forum told the man to follow the factory manual which stated 24 psi., with no allowance for weight speed, etc., of course that is the difference between old school and modern technology.
__________________
Bill.... 36 5 win cpe
blucar is offline   Reply With Quote
Old 09-25-2020, 01:10 PM   #16
1931 flamingo
Senior Member
 
1931 flamingo's Avatar
 
Join Date: May 2010
Location: new britain,ct 06052
Posts: 8,705
Default Re: 1938 Firestone whitewall tire pressure

"correct inflation improves the sometimes “vague” tracking through corners"


How old are the tires?? Makes a difference. JMO
Paul in CT
1931 flamingo is offline   Reply With Quote
Old 09-25-2020, 01:16 PM   #17
Jacques1960
Member
 
Jacques1960's Avatar
 
Join Date: Sep 2020
Location: Mount Desert, Maine
Posts: 80
Default Re: 1938 Firestone whitewall tire pressure

Probably 12-15 years old, but no evidence of dry rot
Jacques1960 is offline   Reply With Quote
Old 09-25-2020, 04:30 PM   #18
1931 flamingo
Senior Member
 
1931 flamingo's Avatar
 
Join Date: May 2010
Location: new britain,ct 06052
Posts: 8,705
Default Re: 1938 Firestone whitewall tire pressure

No but I bet the sidewalls are very stiff. JMO I've got Remington's (15") that are old but still ride nice on the highway or around town (G-78 & L-78).

Paul in CT
1931 flamingo is offline   Reply With Quote
Old 09-25-2020, 04:50 PM   #19
VeryTangled
Senior Member
 
VeryTangled's Avatar
 
Join Date: May 2010
Location: (Not far enough...) Outside of DC
Posts: 2,802
Default Re: 1938 Firestone whitewall tire pressure

Quote:
Originally Posted by Jacques1960 View Post
Probably 12-15 years old, but no evidence of dry rot
Hi Everyone. Jacques1960, you didn't ask for this kind of advice, but I'd put tires way up high on your 'to-get' list if you're thinking of driving any distance at all.
__________________
-Jeff
VeryTangled is offline   Reply With Quote
Old 09-25-2020, 06:41 PM   #20
JSeery
Senior Member
 
JSeery's Avatar
 
Join Date: Nov 2012
Location: Wichita KS
Posts: 15,091
Default Re: 1938 Firestone whitewall tire pressure

...
JSeery is online now   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 04:59 PM.