Just thought I would also post up some pictures on the comparison of the ayk/ae tires. Since I have an ayk Sidewinder it would be interesting to consult the well-known relationship between the two.
As a predecessor to the RC10, the Sidewinder was going to share it's Good Year shoes with the RC10. The Good Year 7 rib front and knobby rear tires. When the Sidewinder was introduced in Europe early 1984, the RC10 prototype was still depicted in European magazines with Tamiya SRB front wheel, centered single servo saver, and the long Kyosho shocks at the rear end.
But how Associated came about with their own wheels and the use of the same set of rubber found on the Sidewinder I don't know. Probably not more mysterious than AE finding the current wheel dimensions suitable for the RC10 and the ayk tires readily available before they made their own versions.
As you see, the Sidewinder has the Good Year writing on them as we know them from early Edinger. From what I have seen, it seems that maybe the rear wheels were the first without writing on the RC10. Several Edingers on here, including my own has the combination of Good Year front and blank rear. Then you have the later blank 7 rib and the Proline grooved front wheels. And to my understanding they were followed on the late Edinger and Cadillac, by the 4 rib front and knobby rear on without writing, and then with the "Team Associated" on the sides.
Anyway, here is the Sidewinder with the Good Years and comparison to my Edingers.
It is a bit tempting to swap the rears from the Sidewinder to get a complete set of Good Year on the RC10. Haven’t made up my mind, but probably not

It's also nice to keep the blanks on as a document of the meandering way of various tires used on the Edingers.