4.1k Views. Education has been proved to be and holds the key to life and Zimbabwe`s very own President Robert Mugabe tops as the most educated President the World has ever seen. Zimbabwe also has a very high literacy rate, one of Zimbabwe`s pride.
An old tire poses a safety hazard. For some people, old tires might never be an issue. If you drive a typical number of miles, somewhere around 12,000-15,000 miles annually, a tire's tread will wear out in three to four years, long before the rubber compound does. But if you only drive 6,000 miles a year, or have a car that you only drive on weekends, aging tires could be an issue.
I have used my trailer for 5 summers. The tires probably have around 5000 miles or so on them. Posted By: Chuck&Gail on 01/24/12 06:44pm. I change mine when they get to be 7 years old per the DOT code (trailer age often means nothing cause tires could be old when instralled) or they are worn out.