Thanks for the answers and advice.
This will be the first time this car is being judged at a National event. Also my first time. I have owned this car since 1960, my first car. It has been restored now and I have been encouraged by several experienced AACA members to enter it to be judged. I drive it frequently and that is why the bias tires are worn. They are the second set of Coker bias tires . They don't last long! And I do have a matching spare. I prefer the radial tires for driving, and they look good. But I would like to improve the chance of earning a First Junior award. Not to increase the value of the car. I'll never sell it.
Anyway, I have bias tires on wheels as well as the radials so I can put the bias tires back on for the show. Don't want to buy more tires at this time. Hope they won't be judged too harshly.
It is my understanding that specific point deductions are not revealed to the owner, so I won't know exactly what to do to correct. But your answers are very helpful to my decision about which tires are most likely to be acceptable.
Thanks again for your guidance.