I don't know about your question directly, and since it appears no one else does, I will share with you what I know and hope you or someone else finds it helpful. There is a huge variance in what is classified as an oval slick. Beyond dirt versus asphalt, they are super-sticky ones and ones designed to last all season in a budget class. There are soft sidewall units designed to cushion the car on a flat track, and there are super stiff ones designed to deal with 20° banking at 100+ mph.
So, unless you know what exact tire you are getting, there is very little anyone can tell you based on it being a circle track tire. That is much too broad a category.
I run stiff sidewall Hoosier 27x10 slicks that the local roundy rounder guys throw out once they are half used up. I get them for free, hence why I use them... My best 60' is 1.66 and I run consistant 1.68-1.71's The trick is to find two used slicks that have the same circumference as each tire wears at a different rate on the circle track cars....
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