Karrier ST205/75R14 Radial Trailer Tire, part # AM32156 Recommendation for Boat 4200 lb w/ Trailer

Question:

radial vs bais on a double axle trailer that weights 1000 with a 4200 pound boat on it

asked by: Bill

Expert Reply:

The main difference between a radial ply and bias ply tire is how the tire is constructed. The cords underneath the tire are run in different directions. On a bias tire, the cords run at a 32 degree angle from the direction of travel and on a radial tire, the cords will run at 90 degrees from direction of travel, or across the tire from wheel lip to wheel lip.

Because of the construction of a radial tire, the tire has more flex and will allow for more ground contact. That will improve traction and better tread wear. It also gives the radial tire better stability.

A bias tire will have a stiffer sidewall and shoulder, which will increase heat buildup in the tire. The radial tire will run cooler which will help the tire last longer, especially when the tire is under a load.

For these reasons I would recommend you get a Karrier ST205/75R14 Radial Trailer Tire with 14 inch Wheel, part # AM32156. It may cost a little more, but as heavy as your boat is it would probably be cheaper in the long run due to the longer tread wear life.

I attached a couple links below measuring tires and bolt patterns below that you might find informative also.

expert reply by: Jameson C