DE Tire Pressures

[Larry Herman]

Not a stupid question at all.  Basically, you need someone to take 3 temps (outside, middle & inner) across the tread of each tire, preferably right in the pits when you come in off of a hot lap (not after the cool down).  It is the difference between the readings that is the key.

Tire temps 101 - If the middle is cooler than the outside your pressures are too low, if it is hotter then your pressures are too high. If the outside is more than 20 degrees hotter than the inside you need more negative camber.  The ideal would be for the outside & middle to be around the same temp, and the inside to be no more than 10 degrees cooler.