Ultimate wheels...

[Nightrider]

@Nurse Ben

The stock tire is essentially a road bike tire, 28c, which is probably not going to work for trail. I am looking at bumping up to a wider tire like what would be used for cylecross or road touring on rough terrain. The tire widths in this category are ~40c or 1.5", some are as wide as 45c or 1.75".

Look here:
http://www.unicyclist.com/forums/showpost.php?p=1489296&postcount=35