You need to use a probe-type sensor instead of an infared. The tire will cool enough to throw off readings with an infared. The heat contained near the cords are what you're after. I know that the Toyo RA-1's on my racecar are supposed to be like high-100's, I think (my "crew chief" knows the exact numbers, I worry more about pressure-settings), but I'm sure you can find the right opperating temps for the Goodyears on the net or by calling a racetire retailer like Appalachian Race Tire, etc. If you don't have a probe-type, an infared can get you a feel for where you're at, but it would be best if someone took temps imediately after the run (we used to do this in the pits right after coming off track). Most companies will say roughly 10-degrees higher on the inside fronts is good, that's only if you're running aggressive camber like <-2ish. Hope this helps.