A group of us has been running minis on a weekly basis at West Coast RC, La Mirada. Come out if you can (Thursdays).
I'm a newbie..On my M05 I ran M grip radial with hard insert in front and s grip radial with soft insert for rear. Chassis is medium. I was having grip problem where my rear was loose. I switch the tires from front to rear and it hooks up. Weird, but it works..LOL