Randy Ayers Nascar Modeling Forums Forum Index Randy Ayers Nascar Modeling Forums

 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Tire evolution (repost from the old board)

 
Post new topic   Reply to topic    Randy Ayers Nascar Modeling Forums Forum Index -> Darkside Racers Corner 1948 - 1972
View previous topic :: View next topic  
Author Message
Tom M.
Board Moderator


Joined: 01 Feb 2018
Posts: 600

PostPosted: Thu Feb 01, 2018 9:55 pm    Post subject: Tire evolution (repost from the old board) Reply with quote

This is copied and pasted from the web archive of the old board. It was originally posted by Dr. Craft:

"1965 was a big year in Grand national tire technology. Small letter Goodyear "Blue Streaks" with a "70" series profile (more squared off shoulder relative to tread) showed up that season. Prior to '65, racing Goodyears were more of a "78" series profile and did not have a racey blue stripe. After the blue streaks appeared, the Goodyear sidewall stayed pretty much the same (compound and tread pattern varied but sidewall did not) through the 1969 season. In 1970 the blue streak got 86ed and the Goodyear lettering grew to what I call three quarter size (compared to today's logo). Tire diameter and tread size also increased. Firestones followed a similar evolution. Prior to '65 Firestone "Darlington" gum dipped tires featured a "78" series style profile a small white Firestone logo and no "stripes". Firestones did feature a small crossed flag Firestone crest water transfer decal on their sidewalls. Early decals were white and later decals (ie '64 through early '65) were red and white (these will be very hard to capture in scale). In '63 side wall embossing changed from Darlington to Stock Car 500, then Stock Car 600 and finally in early 1965, Stock Car 800 (I had to find a set of these partial year unobtanium tires for my Daytona car--very expensive, made me wish I was a rich footbal coach/teacher at the time!). This embossing was NOT white letter however. I only mention it for reference. About mid year, the crossed flag decal was ditched and a gold Line was added to the side wall of the Firestone tires. It is important to note that at the same time the Firestone lettering went from white to GOLD to match the gold line on the side wall. This is a common modeling mistake I have noticed. The tires also became more "70" series in profile. Firestone sidewall configuration stayed pretty much the same unti the company dropped out of the series in the late sixties. Firestones were treaded until then. Oh, BTW, tire size was nominally 8.00/8.20 x 15 all through the sixties. That said ,actual tire size varied greatly over that period. Early 60s tires were nearly 30" tall and had about 8" of tread. By the end of the decade, height had dropped to about 27" and tread width had grown to 10". Hope this helps out."
Back to top
View user's profile Send private message Send e-mail
Bill J



Joined: 28 Jan 2018
Posts: 392

PostPosted: Thu Feb 01, 2018 10:28 pm    Post subject: Reply with quote

Thank you Tom, great information to keep us correct. Good to see you back too:)
Back to top
View user's profile Send private message
Len Woodruff



Joined: 28 Jan 2018
Posts: 100
Location: Frisco, TX

PostPosted: Fri Feb 02, 2018 8:12 am    Post subject: Reply with quote

Thanks Tom. This helps a lot with my 64 Mercury Build.
Back to top
View user's profile Send private message
Henryjint



Joined: 28 Jan 2018
Posts: 1957
Location: NY State's Hudson Valley

PostPosted: Fri Feb 02, 2018 5:01 pm    Post subject: Reply with quote

Thanks for re-posting!
_________________
Forum member since 10/25/2010
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    Randy Ayers Nascar Modeling Forums Forum Index -> Darkside Racers Corner 1948 - 1972 All times are GMT - 5 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group