What is the Difference Between Bias Trailer Tires and Radial Trailer Tires?

What is the Difference Between Bias Trailer Tires and Radial Trailer Tires?

People often ask us what the difference between bias and radial trailer tires are and which ones they should purchase for their trailers. The major difference between bias and radial tires is the construction of the tires themselves. Both tires have cords that make up part of the composition of the underlying material of the tires. Bias ply tires are made of layers of rubberized textile cords laid on opposing diagonals and anchored around the tire’s bead wires. Radial tires have cords that run at 90 degrees from the direction of travel. Radial tires also have reinforced steel cable belts under the tire’s tread.

Both radial and bias tires can be used on trailers. However, the tires used for a trailer must be specifically made for trailer use and must adhere to the weight load and speed for which you will be using them.


Because radial tires have more tread stability than bias tires they are known to handle better than bias tires. Radial sidewalls will flex while going around corners whereas bias tires will roll and deform the tread thus reducing stability. Bias tires are designed with stiffer sidewalls and shoulders, making them less flexible and more apt for straight line towing where cornering and traction are not factors.

Heat Resistance

Radial tires are more resistant to heat than bias tires because their steel cable construction allows them to dissipate heat more effectively. The heavy construction of the bias tire makes it hold heat, making them run hotter under a heavy load. For long distance drives, radial tires are often the preferred choice because they run cooler than bias tires.

Load Distribution

When a trailer tire has more contact with the ground it gives it better load distribution. Radial tires have more contact surface on the road giving the tire less friction and lessening fuel costs and improving load distribution.

Ride and Range

Again, radials win the debate here. Providing a smoother, quieter ride than bias, they are the preferred choice in terms of a better ride. Radial tires also last a lot longer – typically reaching the 40,000 mile range as compared to just 12,000 miles with bias tires. However bias tires are less expensive and still may be the ideal choice for a trailer owner who uses their trailer infrequently or for short distances.

Learn More About Trailer Tires

If you are in the market for new trailer tires or are looking to replace your old radial or bias tires, let us know. We have some of the most competitive prices in the industry and can help to save you money.

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