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 02-04-2008, 05:13 PM
Gold Bird Gold Bird is offline
Experienced
 
Join Date: Nov 9 2007
Posts: 317
Gold Bird is on a distinguished road
Default Tire size suggestion

I have been looking at new tires for the 60 and thought I had the perfect size, 225 75 14. Unfortunately Diamond back tires no longer makes them, they have a 215 75 14. I noticed Coker has a 225 70 14, looks like it might work too. Would a 70 series fit our cars? My existing tires are 215 75 14 and they look small and narrow, I am sure they are wider than the original bias ply though. Do you think the 225 70 14 would be a good choice or should I go with the 215 again? Thanks for the help.
Reply With Quote
  #2  
Old 02-04-2008, 08:16 PM
Dan Leavens's Avatar
Dan Leavens Dan Leavens is offline
Moderator / Administrator
 
Join Date: Oct 4 2006
Posts: 4,494
Dan Leavens is on a distinguished road
Cool Tire Size

Gold Bird this subject has been discussed several times over the years, on this site. To view and ultimately help you, with your choice go to the search button on the home page. When open, type in tires or tire size and hit locate. This will bring up all the threads/ posts that the members recommended. I personally have Coker 215 75 R14 on my 58 HT and they ride very nice.

Dano Calgary,Alberta Canada
Reply With Quote
  #3  
Old 02-05-2008, 01:28 AM
dgs's Avatar
dgs dgs is offline
Super-Experienced
 
Join Date: Feb 13 2003
Posts: 921
dgs is on a distinguished road
Default

Tire sizes are fairly easy to read, once you know that the numbers mean. The first number (215 or 225) is the overall width in millimeters. The next number is the aspect ratio. This is the height of the sidewall as a percentage of the width 70 is 70%, 75 is 75%, etc. From what I can gather, the old bias plys were either 78 or 80 aspect ratio. The last number, of course, is the wheel diameter in inches.

With that info, you can do the math and figure out what approximate size any tire is. The easier way is to go to Discount Tire's web site and use their tire calculator.

Use 205 85 14 and you get the approximate dims that Coker shows for the 8.00-14. To get the approximate dims that Coker shows for the optional 8.50-14, use 212 85 14.

The calculator will tell you the dimensions of each tire and what your speed will be when your speedometer reads 65 MPH.

Comparing to the 8.00-14, the 215 75 is about 2.2 MPH slow and 1.0" smaller (1/2" lower to the ground) and the 225 70 is 3.1 MPH slower and 1.32" smaller (over 5/8" lower). Compare to the 8.50-14 and it gets worse. I don't think there's any way to know what tires your car came with originally.

You're right, the 225 75 14 is only 1.1 MPH slower and .46" smaller (less than 1/4" lower).

Between the 215 75 and the 225 70, get the 215's.
__________________
DGS (aka salguod)
1960 Convertible - Raven Black, Red leather
www.salguod.net

Last edited by dgs : 02-05-2008 at 01:29 AM. Reason: Add link
Reply With Quote
  #4  
Old 02-05-2008, 11:11 AM
Gold Bird Gold Bird is offline
Experienced
 
Join Date: Nov 9 2007
Posts: 317
Gold Bird is on a distinguished road
Default

Thanks for the info, I was hoping to get a slightly wider tire, but looks like the 215-75 is the best overall fit. Interesting on the price comparison between Coker and Diamond Back. Coker lists their tire at $190 and Diamond back has the same size for $159. I think they are both the same tire manufacture too, BF Goodrich?
Reply With Quote
  #5  
Old 02-06-2008, 08:42 AM
tbrd60 tbrd60 is offline
Newbie
 
Join Date: Nov 3 2006
Posts: 29
tbrd60 is an unknown quantity at this point
Default

I have 225/75-14" tires from coker. They look good on my car.
Reply With Quote
  #6  
Old 02-08-2008, 03:11 AM
byersmtrco's Avatar
byersmtrco byersmtrco is offline
Administrator
 
Join Date: Sep 28 2004
Posts: 1,610
byersmtrco is on a distinguished road
Default

That is correct. the stock wheels are narrow. 5" or 5.5" ?
The widest you would want to go with those is 215's. Pref 75 series to get some height out of em.

Another option is (and I know you want to keep your car all orig) is to go to a wider 14" wheel. Then you could run a 225/75/14 and have some meat on the road, throw your stock h/caps on there and look all orig.

I like how the car rides and drives WAY better w/the 15's on there. As I've stated on other posts, I am sketchy about the wire wheels. I had got them with the understanding they are sealed and could be run tubeless. What a crock of bull that is. I have tubes in all four. Every one of those sick things leaked. Some would go flat in two or three days. Others would lose 5 lbs per week. I love the wire wheels on there, but I worry about tubes and blowouts. When we go out in that car, it's not for parade duty. We're usually hookin & cookin.

So we'll see what winds up on there. I can't decide.
__________________
John Byers
1960 Convertible (Orig owner)
Pic of car with my son Justin (15 Y/O 6'1")
Poss 3rd Gen T/B owner
Reply With Quote
  #7  
Old 02-08-2008, 11:32 AM
RustyNCa RustyNCa is offline
Super-Experienced
 
Join Date: May 31 2007
Posts: 1,300
RustyNCa is on a distinguished road
Default

Quote:
Originally Posted by byersmtrco View Post
That is correct. the stock wheels are narrow. 5" or 5.5" ?
The widest you would want to go with those is 215's. Pref 75 series to get some height out of em.

So we'll see what winds up on there. I can't decide.
Yeah, when I started looking at going bigger on the 65, I learned it had only 15x5" rims. I wasn't feeling the 225x75s, I now have 7" for the front and 8" for the car and am going to run 245x60 up front and 255x60 in the rear.

I am thinking it will look really good with the whitewalls and the factory caps on the car and the wide tires will look mean but subtle.

When I get the DB tires on the car, I will post up some photos for opinions.... Currently working on getting the rear of the car lowered a bit.
Reply With Quote
  #8  
Old 02-08-2008, 03:16 PM
Gold Bird Gold Bird is offline
Experienced
 
Join Date: Nov 9 2007
Posts: 317
Gold Bird is on a distinguished road
Default

Well, just ordered new tires from Diamond Back, 215 75-14s. After talking to them he too said that is the best size for the stock rim. I also was impressed about their product after he explained how they are made. I will post some pictures when they are on, thanks to all for the input!
Reply With Quote
  #9  
Old 02-09-2008, 03:20 AM
FeFranco FeFranco is offline
Experienced
 
Join Date: Jan 13 2007
Posts: 232
FeFranco
Default

Quote:
Originally Posted by RustyNCa View Post
I now have 7" for the front and 8" for the car and am going to run 245x60 up front and 255x60 in the rear. .Rusty, I have 265/50/15's on the rear of my '60. Unfortunately my backspacing (3 3/4") wasn't enough so I have clearance issues around turns. Double check your backspacing


Currently working on getting the rear of the car lowered a bit.


What are you using to lower the rear end, blocks?
Reply With Quote
  #10  
Old 02-11-2008, 06:18 PM
tbrd60 tbrd60 is offline
Newbie
 
Join Date: Nov 3 2006
Posts: 29
tbrd60 is an unknown quantity at this point
Default

I got 14x7" wheels and put 225-75 tires on. The car rides great.
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 06:20 PM.

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.