Tires, and the technology that underpins them, have developed dramatically in the past few years. Of course, tires are a compromise. Their carcass designs, compounds, and tread patterns are all built for specific duties and embody various tradeoffs. As a general rule, the gripper a tire is, the lower its life expectancy. A trackday tire's sole lot in life is to cling limpet-like to the asphalt—wear is not a primary or even secondary issue—and it's not expected to work well in wet conditions. Relatively speaking, it's easy to build a trackday tire: Whip out the stickiest compound you have, eliminate all but a few grooves, slap on an eye-widening price tag, and there you are.