Comparing tire sizes is little once you find out the many marking on the tire’s sidewall however grip in consciousness that there is amassed to cognize when buying tires than even-handed their proportions.
7. The “85” is the load rating of the tire with a higher number indicating the ability to carry a heavier load. Because the load rating is closely matched to the weight of the car plus the anticipated weight of any passengers and cargo you should never purchase a tire with a lower load rating than what the car was originally equipped with. Some tires, especially light truck tires, may not have this number or the speed rating listed on the sidewall.8. The “H” is the speed rating for the tire and indicates the maximum speed at which a tire is engineered to function. Most passenger tires have speed ratings of: “S” (112 mph), “T” (118 mph), “U” (124 mph) or “H” (130 mph). High performance tires will typically have a “V” (149 mph) or “Z” (Above 149 mph) speed rating. Dedicated snow tires or spare tires will usually have a lower speed rating.
2. The packages “P” indicates that the tire was designed for passenger cars. Whether the “P” is replaced by an “LT” it indicates that the tire was designed for fluorescent trucks.
3. The “235” is the chop Breadth, besides recognized as the tread diameter, of the tire in millimetres.
4. The “75” is the angle ratio of the tire and probably the one Element of tire immensity that extra human beings bear incident kindly than any other. Simply place it is the percentage of a tire’s heighth above the rim vs. its broadness. In this occasion the tire is 235 millimetres Broad and it’s heighth above the rim is 75% of that or 176.25 millimetres. A tire with a lower aspect ratio Testament tend to stock in a superior way than one with a higher aspect ratio nevertheless Testament tend To possess a harsher operate.
5. The “R” indicates that the tire is a radial ply tire but almost every passenger car tire made today uses radial ply construction. If you are purchasing a bias ply tire for some reason the “R” would be replaced with either a “D” for diagonal bias or “B” for belted bias.
6. The “15” is the diameter of the rim in inches. This is a measurement that has to stay the same as the tires which originally came on your car unless you also replace the wheels. A 14 inch tire For instance is too small to fit over a 15 inch rim and a 16 inch tire is too big To admit the bead to set correctly on the rim.
