I've heard good things about the maxxis beaver.
http://www.maxxis.com/Bicycle/Mountain/Beaver.aspx
Quite narrow, light & meant to shed mud well.
@BareNecessities started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
I've heard good things about the maxxis beaver.
http://www.maxxis.com/Bicycle/Mountain/Beaver.aspx
Quite narrow, light & meant to shed mud well.