Your best bet is to keep the tires at 35 psi cold. I ran that pressure in mine for about 500 miles for the tire break in, then went to 38. I ran 38 psi for a month or so. I read some others were having good luck at 40 psi. I gave it a try and was amazed, these tires still ride smooth at that pressure. Maybe a little more solid over a railroad track but i'm usually going slow anyway.

The last few months I have run 42 when the winter weather has been cold here were I live. All of a sudden Spring and were in the mid 80's. Tonight when its cool out I will let them back down to 40.