Tyre pressures

[Shifu]

"will offer you more grip after a couple of laps if you drop the pressure to much on a street tyre it will increase the contact patch but wont generate enough heat in the tyre & if your speed isn't up enough all you will do is cold tear it which can look like a lot of tyre wear balling up or a ripping where you get on the power"

I think you got it wrong here mate. The heat in the tire is generated by the friction between bands in the tire as it deforms in contact with the asphalt, i.e. the less pressure the more deflection, the more friction inside the tire, the hotter the tire gets. Also the faster you go, the more friction, the hotter the tire gets. You get cold tear on overinflated tires that can not generate enough heat to get to the optimal temperature (or you are slower than someone that reccomended it for you). That is why the tire temperature is the best indicator for correct tire pressure because it also allows for you speed factor on the track. That is also why they do not reccomend you to use slicks if you are slower rider. For PI that is at least 1:50 before you should consider them. You can ask the guys at Madaz there.