My friend and I were having a discussion about tire compounds. I was surprised that we have 2 opposing views. Can someone give me the definitive answer? The question is: On a hard blue groove track you should use A) a hard compound tire (to break into the ground) a soft compound tire (to grip better) And...On a soft loamy track you should use C) a hard compound (to dig into the soil) D) a soft compound (to match the soft soil) Can someone also tell me where to find the answer on the web? Thanks, Barry.