Yeah, run the radials. The slicks, if you haven't used them, allow the rear end oft he car to move around more because of the sidewalls. So it can be an aquired taste when you let off at the stripe, but it goes where you aim it...lol. Radials are heavier and the alignment has more of an affect on things because of radials, but unless you're trailering or street driving with a lot of turns, you can mix and match.