The guy at the tire store today tried to talk me into siping my new Scorpions when they balanced them. Siping is a process of cutting thousands of tiny slits into the tread of the tire. It's supposed to give better traction, quiter ride, cooler tires, and longer tread life. Has anyone done that to their tires?

I was afraid to have them sipe $700 of new tires so I said no for now. I figured that by increasing the surface area of the tread, you would be exposing more of the rubber to oxidation and the elements. Over time, the exposure could possibly cause the tread to crack and turn brittle earlier than it might otherwise -- or so me thinks.

Here's a URL. Careful if you're at work, though; the page sounds like a video game!
www.sipers.com