Jump to content

1920's Tire Size Confusion


Samebeef
 Share

Recommended Posts

Hello everyone,,

I'm looking to buy a spare tire for my '25 Dodge Brothers which is equipped with 20" diameter disk wheels (a popular option back in the day). The tires on it are size 6.00 - 20 and the outer diameter measures about 32". The tires are Firestone Deluxe Champions https://19216801.onl/ https://routerlogin.uno/https://192168ll.link/. I cannot seem to find this tire size listed on the Coker, Lucas or Universal web sites. This is the closest I can find but what does the 525/550 mean? Is that 5 & 1/4 to 5 & 1/2 ? I would have preferred to have a matching tire but no luck in that size. You guys with similar era cars using a 20" wheel, what tire size are you using?

Edited by Samebeef (see edit history)
Link to comment
Share on other sites

The 525/550 means 5 1/4 and 5 1/2  wide at the tread.  This may be undersized for your car.  Both Coker and Universal have 600/20 tires on their website.

Link to comment
Share on other sites

Also, originally in the 20's the tires were not measured that way.  For instance A 32 X 6 would fit a 20 Inch rim. Common on one ton model A Ford trucks. In this instance the 6 is doubled to 12 and the subtract from 32. You come up with 20 inch rim size on a 6 inch rim.

 

Here's another older link to more on Dodge Tires.   https://forums.aaca.org/topic/256053-1920s-tire-size-confusion/

Link to comment
Share on other sites

6 hours ago, Matt Harwood said:

 

Coker bought Universal, not vice-versa.

OK. I did hear that Corky sold the family business. Looks like your right. The new owners swallowed up Universal. Hard to keep up with all these corporate takeovers. Thanks for the heads up Matt. Dandy Dave!  

Link to comment
Share on other sites

7 hours ago, Matt Harwood said:

Coker bought Universal, not vice-versa.

 

1 hour ago, Dandy Dave said:

OK. I did hear that Corky sold the family business. Looks like your right. The new owners swallowed up Universal. Hard to keep up with all these corporate takeovers. Thanks for the heads up Matt. Dandy Dave!  

 

Didn't that occur years ago, before Coker sold?

 

 

Link to comment
Share on other sites

Coker bought Universal many years ago. Corky retired from the business personally. But the last I knew, he still had a really strong manager running it for him, named Wade. And Wade is a great guy and good friend. 

  • Like 1
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

×
×
  • Create New...