Construction type is the letter that follows the aspect ratio in the tire code. It denotes the type of the tire internal construction, that maintains the tire stability on the road. There are 2 types of construction:
- R - Radial;
- D - Diagonal (also known as Bias Ply).
The majority of tires used in the U.S. are radial tires, and that is the only kind of construction offered by Fuzion tires. So chances are high, that you also have got radial tires on your daily driver. This construction means, that the internal ply cords of the tire are positioned in radial direction, perpendicular to the rotation axis and placed from one bead over to the other.