Since no one else is jumping in, and it's late, I'll give it a shot. You can get more than 25 runs on slicks on a 12-13 sec car, but the consistency starts going away. If you are running the brackets, you want to et exactly the same, or very close to it every run. As slicks age, the consistency starts to become erratic. I used to get a whole season on my slicks, or at least most of a season.

We just bought a set of slicks from a 7 second Mustang racer. He sells them after 5 runs, because he can still get some money back, but he can't trust them to bite the same much beyond that time.

As for Drag Radials, some of the more experienced racers on here will have to answer that for you. I've run only M&H slicks in my life, so I have no experience with them.

Don