Tire Technology

Understanding what makes a quality tire begins with understanding basic tire construction.

Construction of Truck and Bus Tires

The two basic types of tire construction in use today are Bias and Radial.

As trucks have become larger, speeds have increased and loads have become heavier. Radials have replaced bias tires in most applications because they have been better able to satisfy the increased performance demands.

Radials have less tread distortion, resulting in lower rolling resistance and greater fuel efficiency. Additionally, they dissipate heat faster and provide longer treadwear.

Radials give the driver more control by providing excellent steering stability and traction, while also being more puncture resistant. They also provide a smoother ride, even at high speeds.

The Casing

The life of a tire is dependent on many elements, but perhaps the most important is the strength and integrity of the casing, which includes all parts of the tire except the tread and shoulder. The quality of the Yokohama casing not only ensures original tread longevity and performance, but also contributes to the long life of the tire when it is retreaded.


Operational costs are steadily on the rise. To combat this trend, truck tire retreading has become a viable practice in the industry. Today, a tire must not only exhibit exceptional original treadwear, but afford multiple retread opportunities. Recent technological advancements in retreading help to accommodate multiple retreads to significantly extend tire life, and therefore, reduce tire expense.

Yokohama understands the value of retreading and concentrates on designing radial truck tire casings that will continue to perform well after the original tread life.

Retread manufacturers nationwide have consistently rated Yokohama casings among the best in the industry. This, coupled with one of the best casing warranties available, strengthens Yokohama's commitment to quality, dependability and value.

Tire Compounds

One of the challenges faced by the tire industry has been how to produce a high-quality, durable, fuel-efficient tire that does not sacrifice traction.

Focusing our research and development efforts in this direction, we broke industry barriers and proved in independent tests that Yokohama tires have greater fuel efficiency than all other leading brands.

Yokohama has invested hundreds of millions of dollars in researching and developing new rubber compounds and tread designs to meet the increasing demand for specialized applications.

Each Yokohama tire is a combination of over ten different rubber compounds with special properties to ensure the integrity and durability of the tire.