Goodyear tire history: the missing piece of the puzzle

[my427cobra]

Hi all. I need your help.

I am nearing the end of my research to write an article for SAAC on the history of Goodyear tires on the Cobras.

I've accumulated countless pictures, a fair amount of data and had the wonderful opportunity to do a face to face interview with JL Henderson, the VP and General Manager of Shelby Enterprises, and the Goodyear Race Tire Distributorship.

One piece of the puzzle still eludes me:
In those iconic pictures of CSX2000 being assembled in Dean Moon's shop in Feb'62,
What were the tires on the car?????????

The best photos show a tire with 6 tread groves and a smooth shoulder. No sidewall markings are visible.

Then an early publicity photo of CSX2000 shows a very clear image of the same (or similar) tire and the sideway detail is visible and says “Speedway Special”. It also appears to have the Blue Streak circumferential rib on the sidewall and a ribbed shoulder.

Then in the earliest road test, printed in Sports Car Graphic, May ’62 (the road test was supposedly done barely days after Shelby completed CSX2000 in early Feb ’62), the Cobra is pictured on tires (Goodyear Speedway Special) with the same (or very similar) tread pattern on the tires in those pictures from Dean Moon’s shop and for the first time we see, in the Spec Table, the tire sizes: 6.00x15 F and 6.50-7.00x15 R. In the narrative, there is no mention of tire manufacturer or type.

So, do any of you historians and early Cobra experts know or can confirm what those tires were on CSX2000 at Dean Moon's shop?

Would certainly appreciate the help so I can fit the last piece of the puzzle.

Cheers
Greg