Last time I did them was during the summer 90+ heat wave. Now that temps have dropped to 40-50-60 range, finally checked them again. All tires were almost 8 psi low!

Surprisingly, I knew about this before and had written articles about it for our Porsche Club newslewtter. Forgot about it this time - must be approaching senility.

I did the same thing about a month ago. I checked the tires and they were about 28PSI (warm!) all around. And I had been wondering why my gass milage had gone down by about 4MPG...

nt