Differences Between Radial and Bias Ply Trailer Tires

Question:

What are the main differences between the performance of the same size bias ply vs radial ply tires on my enclosed trailer? Does one ride smother or have less rolling resistance fuel economy? I have a 6 X 10 Wells Cargo enclosed trailer with a torsion axle. The tire size is ST205/75D14.

asked by: Dennis B

Expert Reply:

The main difference between a radial ply and a bias ply tire is how the tire is constructed. The cords inside a bias ply tire run at a 32 degree angle to the direction of travel, and the cords on a radial tire run at a 90 degree angle to the direction of travel, or across the tire from wheel lip to wheel lip.

A radial tire flexes more than a bias tire, giving it better ground contact, traction, stability, and tread wear.

A radial tire will normally run cooler than a bias ply tire, especially when the tire is under a load. A tire that runs cooler will last longer.

A bias ply tire has a stiffer sidewall than a radial, a feature that might be useful for off road applications like farm use.

At one time radials were more expensive than bias ply tires, but now they are closer in price. This makes radials a much better value.

Based on all of that I would recommend you go with a radial tire on your trailer, for that I would recommend part # AM10235 as it is a ST205/75R14 radial tire.

expert reply by: Jameson C