tire temps and suspension

i autocross my 2011 porsche spyder. it has -2.9ºF/-2.5ºR camber, on stock spyder springs/dampers and tarret adjustable front and rear sway bars set to the middle on the front, second stiffest on the rear . i run bridgestone re71rs tires at 28psi front and 27psi rear. my probe pyrometer shows the inside of the fronts the hottest, outer the coolest with the centers in between with as much as a 8º difference between inner and outer readings. i get these numbers from autocross runs, haven't been able to test on a skid pad.

does this mean i'm running too much negative camber, my front sway bar is too stiff not allowing sufficient dynamic camber loss, or i'm not turning hard enough? or something else? i would expect the outers to be hottest.