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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.
BMW allows up to 15,000 miles between oil changes, but that is too long to wait to rotate the tires. Unless you drive fewer than about 7,500 miles per year, you should probably rotate tires every six months or so. Related: NHTSA Launches TireWise Safety Campaign The tires mounted on the drive wheels of any vehicle perform extra duty because they apply the power to the pavement.