OK, I must have slept on my side a lot since last race season and some of my precious knowledge leaked out into my pillow. Either that or I am getting senile.

When using a pyrometer at the track or autocross it seems fairly obvious that the ideal is to have the same temp all the way across but what if they are not?

Does this logic make sense?

High inside temps mean lower tire pressure
High outside temps mean raise the tire pressure

High middle temps = ?


The odd thing is that I have used a pyrometer for years and have had great success. I have usually found that due to the course design, one or more tires need a different pressure than the others and the only way to determine this is with a pyrometer.

 

High middle would indicate a high pressure.

High inside would indicate that you are running too much camber or toe-out.

 

Yes, I know high inside would mean I have a lot of negative camber, but within reason, I know there is a way to change air pressures to balance things out.

Any negative camber will result in a high inside reading when driving only in a straight line.

I have been adjusting tire pressures to "idealize" the tread footprint for a specifice track, and temps for years, I have just gone brain dead.