LRP Kamikazes will work fine on a grass track, it'll wear into dirt anyway. At my local track (grass), Crimefighters and JConcepts Hit Men are popular. Those are pretty similar to the Kamikazes, and they work well. When it turns to proper dirt, use the Losi's, as they have smaller lugs which will work better. Angle Spikes will be good if it rains (though I wouldn't be running the electric then!).
__________________
|