What Are Wear Bars on Motorcycle Tires?

Wear bars are one way to verify the amount of tread depth left on motorcycle tires, and can help owners determine when they should consider buying a new set of rubber.

Tire Tread

Tires are constructed for different applications, but in all-weather tires there is a tread that is designed to provide traction, both during dry weather and when there is water on the road.

Low Tread Concerns

When a tire is first installed, the tread is at its greatest depth, but over time motorcycles can degrade. This can impair handling during unfavorable conditions, including when it rains or snows.

Wear Bar Location

Wear bars are generally located in or near the center groove of a tire, and are horizontal strips of rubber that are perpendicular to the direction of the tire rotation.

What Wear Bars Signify

When new, the wear bars on motorcycle tires will be lower than the rest of the tread. When the tread is even with the wear bars, it may be time to consider purchasing new tires.

Other Ways to Check Tire Pressure

A common test in the United States is to use a penny. Place one vertically in the tread gap. If you can see the entire face, it is a sign of low tread.

References

• Consumer Reports: How Safe Are Worn Tires?
• Tire Rack: How to Measure Tire Tread Depth