The numbers and letters on a car tire may seem confusing, but they're actually relatively simple once you understand them.

Tire speed ratings basically tell you how fast you can go before your tires turn into shrapnel. Your everyday grocery-getters can get away with, say, inexpensive S-rated tires that will hold together ...

Driving through snow and ice this winter? You'll be safer if your tires display this small (but important) symbol.