Join Date: Feb 2007
Location: On an intergalactic cruise, in my office
A set of Pilot Road 2s will last you for commuting.
There are wear indicators in the tread of the tire. When the tire reaches the wear mark, replace it. They can severely cup before that though if not properly inflated, so overall tire wear should be looked at.
2005 ZX-10R Street and Track Whore