CARS.COM — Virtually every vehicle manufacturer, tire manufacturer and tire dealer recommends you periodically rotate your tires so they wear evenly and last longer, but is rotation really necessary?
Many motorists apparently don’t think so, as tire rotation is one of the more neglected routine maintenance items. You can even spot many vehicles that suffer neglect: They’re the ones with front wheels that are nearly black from accumulated brake dust. The front brakes are larger than the rears on most vehicles and do 75 percent or more of the braking, so they generate more pad dust.
Whether your vehicle has front-, rear-, all- or four-wheel drive, your tires benefit from a change of scenery from time to time because the weight and workload they carry is unevenly distributed among the four wheels. That makes the tires wear unevenly.
A majority of vehicles on the road are front-wheel drive or have all-wheel-drive systems that operate in front-drive most of the time. The front tires carry an extraordinary load on those vehicles.
First, they carry far more weight than the rear tires because the engine and transmission are usually mounted transversely over the front axle. When you apply the brakes, more weight shifts forward, further adding to the load. The front tires also endure uneven wear and tear from powering and steering the vehicle, and they bear the brunt of cornering forces, when weight shifts to the outside of a turn. In contrast, the rear tires on front-drive vehicles are just along for the ride.
Rear-wheel-drive and four-wheel-drive vehicles spread more of the load to the rear tires because they drive the vehicle, but the fronts still carry a significant burden, including steering and more weight.
How frequently tires should be rotated depends on the vehicle and the manufacturer’s recommended interval, which should be listed in the service section of the owner’s manual. A good rule of thumb is to rotate them at least as often as you change the oil, or more often if the oil-service interval is, say, 10,000 miles. For example, if you drive 12,000 to 15,000 miles per year, you should be rotating the tires twice a year.
The tire rotation pattern also depends on the vehicle, but for most front-drive vehicles a typical pattern is to move the front tires to the rear on the same side and crisscross the rear tires to the front. The pattern might be different for rear- and four-wheel-drive vehicles and will be different on cars that have directional tires or different size tires in the front and rear.
With directional tires, for example, the tires have to stay on the same side and only move between front and back. If the front and rear tires are of different sizes, they are rotated to the other side of the same axle.
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