i got new tires, installed on 5-2-09

[Easy Rider]

Originally Posted by diffluere

I've heard a lot of good things about Pirelli tires. I think my friend has them on her ninja?

Pirelli generally makes performance tires. They "stick" real good.
Typically that is a trade off with wear; more stick, less wear.

How many miles a year do you think you might ride ??

My totally wild guess is that a Pirelli "racing" tire will last no longer than 10,000 miles...BUT....if you only ride 2K per year, that's 5 years and would be a reasonable investment.
If, OTOH, you think you might ride 10K per year, then the sticky tires probably aren't your best choice, as you might be changing them every year.