When You Put Air in Your Tires, Check Your Spare
by Elizabeth Yuko from Lifehacker on (#4XVN3)

If you have a car or drive one, you're probably (hopefully) regularly checking your tire pressure. Under-inflated tires can be a huge problem, doing everything from causing an accident, to speeding up wear and tear on your tires, to wasting gas. In other words, you're going to want to keep them properly inflated. And"