This will take you to the main site where there is history, technical information and other information on these cars.
This takes you back to the main page of the forums.
This is the control panel to change your password, information and preferences on this message board.
Click here if your lost your password or need to register on this message board. You must be a registered user to post. Registration is free.
Search this board for information you need.
Click here to buy cool Squarebirds mechandise.
Click here to support Squarebirds.org. For $20 annually receive 20mBytes webspace, a Squarebirds e-mail address and member's icon on the message board.
  #1  
Old 05-29-2016, 10:22 PM
GeoffInCarlsbad's Avatar
GeoffInCarlsbad GeoffInCarlsbad is offline
Experienced
 
Join Date: Jul 4 2015
Posts: 175
GeoffInCarlsbad is on a distinguished road
Default Tire & Wheel Conversion Size

Hi folks:

Just getting back after health issues.

Looking to source steel wheels for my 1961 T-Bird Convertible.

Shop Manual indicates: 8.00 x 14-4 size tires.

I measured the original hub caps and they are 14" so, I just want to validate the OEM wheels were 14". What's the proper width of the wheel?

I will check with Coker for closest tire size, but does anyone else have any suggestions for getting original-looking tires and what their experiences have been?

Thanks,

geoff
__________________
Geoff In Carlsbad
1961 Thunderbird Convertible
2008 F-250 Super Duty Diesel Long Bed
Reply With Quote
  #2  
Old 05-30-2016, 08:59 AM
dgs's Avatar
dgs dgs is offline
Super-Experienced
 
Join Date: Feb 13 2003
Posts: 921
dgs is on a distinguished road
Default

Squarebirds also came with the same 8.00-14 tires. They are tall and skinny, unlike modern tires which are short and fat. The best match in radials are 215/75R14 or 225/75R14 and that's what most Squarebird owners are running. Both are going to be a bit shorter and a bit wider, however.

According to Coker:
the 8.00-14s are 7.7" wide & 27.59" tall

The modern sizes can be calculated[1], although there is some variation:
the 215/75R14s are 8.46" wide & 26.69" tall
the 225/75R14s are 8.85" wide & 27.28" tall

I hope that helps

[1] - the first number is the width in millimeters, the second number is the sidewall height as a percentage of the width and the third is the wheel diameter in inches.

So, for 215/75R14:

Width = 215mm/25.4 = 8.46"
Height = 8.46" * .75 * 2 + 14" = 26.69"
__________________
DGS (aka salguod)
1960 Convertible - Raven Black, Red leather
www.salguod.net
Reply With Quote
  #3  
Old 05-30-2016, 10:31 AM
del's Avatar
del del is offline
Amateur Knuckle Buster
 
Join Date: May 11 2010
Posts: 207
del is on a distinguished road
Default

Here is what the Coker Classic 215/75R size looks like on the car. These were mounted spring 2015 and I'm pleased with them.
Attached Images
File Type: jpg tires_2.JPG (100.5 KB, 82 views)
File Type: jpg tires_1.JPG (90.0 KB, 82 views)
__________________
Regards,
Don Vincent
Amherst NY
1960 HT 352
TBird Registry 34042
Reply With Quote
  #4  
Old 05-30-2016, 07:47 PM
bird 60 bird 60 is offline
Super-Experienced
 
Join Date: Mar 18 2009
Posts: 829
bird 60 is on a distinguished road
Thumbs up

Hi Geoff, good to hear you're back from your health issues.
I have a '60 Bird & the tire size is 225/75R14 Coker Radials with a 2 1/2" Whitewall.
I am very happy with the appearance, handling, & quietness.

Chris....From OZ.
Reply With Quote
  #5  
Old 06-01-2016, 06:28 PM
GeoffInCarlsbad's Avatar
GeoffInCarlsbad GeoffInCarlsbad is offline
Experienced
 
Join Date: Jul 4 2015
Posts: 175
GeoffInCarlsbad is on a distinguished road
Default Exactly what I Expected

Hi guys:

I only expected the best answers from you all! Thanks. So I guess my last question is:

If I buy 14 inch steelies, is there an issue with width or are they pretty much standard?

~g
__________________
Geoff In Carlsbad
1961 Thunderbird Convertible
2008 F-250 Super Duty Diesel Long Bed
Reply With Quote
  #6  
Old 06-01-2016, 09:09 PM
DKheld's Avatar
DKheld DKheld is offline
Super-Experienced
 
Join Date: Aug 27 2008
Posts: 1,428
DKheld is on a distinguished road
Default

Glad you guys are happy with your Cokers.

Guess compared to bias plys they are acceptable.
I had Bias plys on mine (G78-14) from about 1994-2004. Put Diamond Back Radials on in 2004 - loved them (made by Dayton). Car drove SUPER - almost as good as a modern car and as well as my Ford E-150 van.

Recently replaced the 10 year old Diamond Back radials with Coker Classic radials.

Exact same size - no changes to the suspension, alignment steering etc.

Car is all over the road - I don't like the tires at all. Used to be able to drive with one hand on the wheel and no sawing back and forth. Now I don't feel comfortable driving the interstate at 70mph with 2 hands on the wheel. I've tried different pressures with about 44psi working the best. Wish I had gone back with Diamond Backs..

Just my 2 cents

Eric

Sure - they look fine but I would settle for looking worse and driving better.


Reply With Quote
  #7  
Old 06-02-2016, 09:00 AM
del's Avatar
del del is offline
Amateur Knuckle Buster
 
Join Date: May 11 2010
Posts: 207
del is on a distinguished road
Default

Hi Eric,
In my case I was replacing aged bias plys with the Cokers, so yes there was a big improvement in handling. I'm interested in your tire pressure experimenting, though. What pressure are other folks using on the radials? I did notice a bit of the "wandering" effect you mentioned when the tires were first installed last year, but I've either become used to it or it is less now that the tires are broke in.
__________________
Regards,
Don Vincent
Amherst NY
1960 HT 352
TBird Registry 34042
Reply With Quote
  #8  
Old 06-02-2016, 09:49 AM
bird 60 bird 60 is offline
Super-Experienced
 
Join Date: Mar 18 2009
Posts: 829
bird 60 is on a distinguished road
Default

36 psi.
Chris.....From OZ.
Reply With Quote
  #9  
Old 06-02-2016, 01:14 PM
dgs's Avatar
dgs dgs is offline
Super-Experienced
 
Join Date: Feb 13 2003
Posts: 921
dgs is on a distinguished road
Default

Quote:
Originally Posted by GeoffInCarlsbad View Post
Hi guys:

I only expected the best answers from you all! Thanks. So I guess my last question is:

If I buy 14 inch steelies, is there an issue with width or are they pretty much standard?

~g
A 14" wheel only tells you what the diameter is. They will vary in width & offset, bolt pattern, center hole, etc. The Squarebird wheel, I believe, is 14" x 5.5" wide with a 3/4" offset or 4" backspace with a 5 x 4.5" bolt pattern. I'm not sure if the Bulletbirds used the same wheel dims or not, but with the same tire size they are probably close.

Here's a good image showing what the terms mean. All of these dimensions vary depending on the application.

__________________
DGS (aka salguod)
1960 Convertible - Raven Black, Red leather
www.salguod.net
Reply With Quote
  #10  
Old 06-03-2016, 07:02 AM
OX1 OX1 is offline
Experienced
 
Join Date: Feb 10 2016
Posts: 249
OX1 is on a distinguished road
Default

I recently put these on. http://www.summitracing.com/parts/HKT-10703/

Only a small whitewall, but they drive fine. No wandering, etc...
up to well over 70.
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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 09:28 AM.

Driving, racing or working on cars can be hazardous. The procedures and advice on this website including the message board are opinion only. Squarebirds.org and its webmasters and contributors do not guarantee the correctness of the advice and procedures. The Squarebirds.org and its webmasters assume no liability for any damage, fines, punishment, injury or death resulting from following these procedures or advice. If you do not have the skills or tools to repair your car, please consult a professional. By using this site you agree to hold harmless the Squarebirds.org, its authors and its webmasters from any resulting claim and costs that may occur from using the information found on this site.

Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Any submissions to this site and any post on this site becomes property of Squarebirds.org . The webmasters reserve the right to edit and modify any submissions to this site. All material on this is site is copyrighted by the Squarebirds.org. Reproduction by any means other than for personal use is strictly prohibited. Permission to use material on this site can be obtained by contacting the webmasters. Copyright 2002-2016 by Squarebirds.org.