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       Good to Know  >   Tire Dictionary
     Tire Dictionary

Select a topic from the list below to learn more.

• Air Pressure
• Alignment of Vehicle
• All Season Tires
• Anti-Lock Brake System (ABS)
• Anti-Slip Control (ASR)
• Aquaplaning (Hydroplaning)
• Asymmetrical Tread
• Balancing
• Bead
• Braking distance
• Camber
• Casing
• Chains
• ContiComfortKit (CCK)
• Date of Manufacture
• Direction of Rotation
• DOT Serial Number
• Electronic Stability Program (ESP)
• Emergency Mobility Systems
• Hydroplaning (Aquaplaning)
• Load Index, Ply Rating or Load Range
• Minimum Removal Tread Depth


• Mixing Tires
• Radial Tires
• Reinforced or XL (extra load) Tires
• Replacement
• Revolutions Per Mile (RPM)
• Rolling Resistance
• Rotation
• Self-Supporting Run-Flat Tires (SSR)
• Speed Symbol
• Temporary Spare Tires
• Tire Gauge
• Tire Size Designation
• Tire Storage
• Toe
• Tread
• Tread Depth
• Tread Wear Indicator (TWI)
• Uniform Tire Quality Grading (UTQG)
• Valve
• Valve Cap
• Winter Tires

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To achieve uniform wear and to maximize tread life, your tires should be regularly rotated. Follow the vehicle manufacturer’s recommendation for the rotation pattern and interval. Unless otherwise specified by the vehicle manufacturer, rotate your tires every 6,000 to 8,000 miles (10,000-12,000 kilometres) or sooner if uneven tread wear begins to appear. If tires start to show uneven tread wear, ask the service person to check and/or correct any vehicle wheel misalignment or other mechanical problem.

Full-size spare tires (not temporary spares) of the same size and construction as the ground contact tires should be included in the tire rotation. Always check and adjust the inflation pressure of the full-size spare when incorporating it into rotation. Adjust the tire inflation pressures according to the vehicle manufacturer’s recommendation for the new wheel position (specified front and rear position tire pressures may be different).

Rotation of your tires may affect the Tire Pressure Monitoring System (TPMS). Consult your vehicle owner’s manual or a qualified service professional to make the proper adjustments or recalibration of the system.

Please note: Do not reverse the rolling direction of directional tires.