What is the difference between a 205 75R15 and a 205 75D15?

What is the difference between a 205 75R15 and a 205 75D15?

The D in 205/75D15 represents that the tire has a bias ply construction whereas the R in 205/75R15 represents that the tire has a radial ply construction. In short, a radial ply tire will run cooler than a bias ply tire which makes it better for highway use.

What is the difference between ST175 80R13 and ST175 80D13?

What is the Difference Between ST175/80D13 Tires and ST175/80R13 Trailer Tires. The D in 175/80D-13 indicates that it is a bias ply tire where as the R in 175/80r-13 indicates that it is a radial tire. The difference is how the steel belts inside are oriented.

What does D mean on tires?

The D is the designation for the internal construction of the tire. The D stands for diagonal or bias ply construction. That means the tire body plies inside the tire will crisscross. The 15 is the wheel diameter in inches and the C after the tire size will designate the load range.

What’s the difference between a 175 tire and a 185 tire?

The 185 would have a diameter of 24.65 inches while the 175 would have a diameter of 24.02 inches. The section width, or thickness of the tires differs is slightly more noticeable. The 185 would be 7.28 inches wide while the 175 is 6.89 inches wide.

What’s the difference between D and R tires?

The difference between the two trailer tire sizes is that the letter D in the first size you listed ST205/75D15 stands for bias ply and the letter R in the tire size that they put on your vehicle stands for radial. A radial tire will normally run cooler than a bias ply tire, especially when the tire is under a load.

Should I run my trailer tires at max pressure?

We recommend that all trailer tires be inflated to the max psi stated on the sidewall of the tire. If the tire is under inflated, the weight capacity is lowered to an unknown amount for that tire.