What does ST205 mean on a tire?
On a trailer tire labeled ST205/75D15 C, the ST stands for Special Trailer which means it is designed for use on boat and utility trailers. The 205 is the section width of the tire in millimeters. The 75 is the aspect ratio (or section height). It means the section height of the tire is 75% of the 205 mm section width.
What’s the difference between ST205 75D14 and ST205 75R14?
The difference between them is the tire’s type of construction. The ST205/75D14 tire is a bias ply type with a Load Range D rating. The ST205/75R14 tire is radial type that will typically run cooler than a bias ply and this means it will be likely to last longer.
Can you mix R and D tires?
Expert Reply: It’s fine to use a radial-type tire as a spare (a tire with “r” in its size code) with a trailer that has Bias ply “d” tires but for a short distance in the event of a flat tire. But mixing tires is not recommended for everyday use because their internal construction is different.
What does the D mean in a trailer tire?
Bias ply
R indicates a radial tire — D indicates a Bias ply tire D is for diagonal. The sidewalls will flex differently. The radial tire should run a little cooler . Also a radial tire the same size as a bias ply tire should have a larger contact area where the tire meets the pavement because of the design .
What does D stand for in tire size?
diagonal
R stands for radial construction. B means belted bias and D stands for diagonal bias construction. 16 The last dimension listed in the size is the diameter of the wheel rim, which is most often measured in inches. If a tire size reads, LT235/75R15 104/101S, the LT indicates that this tire is meant for Light Truck use.
What is the difference between a D14 tire and a R14 tire?
That means your wheel is a 15 inch wheel and a D14 or R14 tire will fit a 14 inch wheel. The difference between a bias ply and a radial tire is the way the rubber is layered. A bias ply is layered around the tire, and a radial tire is layered from sidewall to sidewall with steel belting.
What does the R or D mean in a tire size?
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.