Firecracker ?
What kind of hp are we talking here ?
I have a 1970 HotRod magazine article, with a Guru Doug Dutra /6 build. With every trick part, and his knowledge thrown at the motor, trans, car weight, on and on. He came up with a whopping 167.6hp at 4500rpm 14.926 at 78.73. And guess what rear tire he used ? He used a 13"x7" rim with a 24.5" tall tire !!!!!! Why did he do that you ask ? Because he didn't want to dog the little 6 with a big *** tire. Most people understand rotating mass, and unspring weight. Google is your friend.
I really could care less what tires you run, but I got $100 your car will be quicker with a smaller tire than the tire you are suggesting. Than again, I'm sure you know more than Dutra.
PS: I have a car with the same firecracker crap as you, i know what I speak..
