Last year I raced Continental Cross Country tires that are 1.5" wide. They seemed to grip very well in wet and
muddy conditions which is a plus here in Portland. Though I surfed around before deciding to buy these tires,
they were also recommended to me when I showed up at the LBS to buy them. I have also been pretty happy
using them for mountain biking, though they don't do very well in loose, sandy conditions.