After enabling the F9 screen there are grey bars above the tire temperature diagrams. Do the grey bars indicate the forces on the tire, or do they indicate the camber of the tire?

With the LX6 at Blackwood, in order to get even temperatures, I have to set the camber +1.5 front, +1.0 rear, with a net camber from -.2 to -.1. I reduced tire pressures to the minimum 11.0 psi and there's still a slight bulge in the middle of the grey bars. The grey bars are bigger on the outside when turning, yet the tire temperatures come out even with this setup.

The setup is easy to drive, I'm not that good with LFS but I can get sub 1:25 lap times with this setup, which is slightly quicker for me than the WR edgar setup.

http://jeffareid.net/lfss2/LX6_bl1_jeffr.set

the bars indicate the load on the inner middle and outer section of the tyre ... so in other words its the normal force acting on the surface of the tyre
when it comes to setups the bars are a good indicator for the momentary camber (or rather the inverse of the camber)