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Radial passenger car tires are designed for use on passenger vehicles, providing a balance of performance, comfort, and durability. They are constructed with a radial design, where the tire's cord plies are arranged at a 90-degree angle to the direction of travel, allowing for better road contact and improved handling. Typically made from rubber compounds and reinforced with steel belts, these tires are engineered to withstand various driving conditions and provide a smooth ride.
| Construction type | Radial |
| Tread patterns | Symmetrical, asymmetrical, and directional |
| Aspect ratio | Typically 30% to 70% |
| Rim diameter | 14 to 22 inches |
| Load index | Ranges from 75 to 120 |
| Speed rating | Ranges from P to Z |
When selecting radial passenger car tires, consider the vehicle type, driving conditions, and performance requirements. Specify the desired tread pattern for traction needs, the appropriate load index for weight capacity, and the speed rating based on driving habits. Additionally, inquire about any certifications such as DOT approval and check for warranty options. It is also important to determine the quantity needed for replacement or new installations.
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Radial tires have plies arranged at 90 degrees, offering better handling and fuel efficiency, while bias-ply tires have plies arranged at angles, providing a stiffer ride.
Tires should be replaced every 6 years or when tread depth reaches 2/32 of an inch, whichever comes first.
Tire size indicates the width, aspect ratio, and rim diameter, helping to ensure proper fitment on the vehicle.
It's not recommended to mix tire brands or tread patterns as it can affect handling and safety.
Tire rotation helps to ensure even wear, extending the life of the tires and maintaining optimal performance.
You can use a tread depth gauge or the penny test; insert a penny into the tread with Lincoln's head down; if you can see all of his head, it's time to replace the tire.