Hi Dan,

Pzero corsas are more of a track tire, not recommended for extremely wet roads..... I imagine they would be ok for light rain, dew. I never had any problems with wet handling....but I have not pushed the car hard on wet surfaces either. Here is some info on the corsas....

http://www.tirerack.com/tires/tires....el=PZero+Corsa

Your trip sounds fantastic, have a great time!

Bernard