Well I dont have any jokes, but this past weekend I was racing down in Tallahasse, Fl and my friend Vernon said i was loosing because of my tires. So he said try this, I did not know what i was doing wrong so i was willing to try anything. He chnged my tires and put my car on the track. My lap times came down and I was way more consistant. I took my car off the tack to look at the tires and they were Jconcepts Cross Hairs (YEllOW) bad news they are half way gone. So I need some new ones for the PNB.