A friend was throwing away a few sets of slicks. So I picked up a pair since they were free. They are Hoosier 2070 27.0/10.0-15. What do these numbers mean? Which is the width? I figures the 15 is for 15" rims.
The 27.0 is the overall height of the tire. A stock 215/70r15 is 26.9", so they're perfect height wise. The 10.0 is the width. I'm not sure if you can fit them on your wheels or not, but something tells me no. And obviously, the 15 is the rim size. As for the usefulness, there's probably a reason your friend was throwing them out. However, they probably have quite a few drag runs left in them as long as you aren't putting out ChadG levels of power. As long as you can find wheels to put them on and the tire shop says they're still safe, go for it. Even a used slick will still behave better at the track than many street tires. Plus, you get to do burnouts without looking like a poser.
Michael - wishes he had some free slicks