The markings stamped on the sidewall surfaces of most vehicle tires bring integral advice regarding the intended speck, load and speeds for any specific tire. It is decisive to holding indication of these markings when sizing fresh tires for your vehicle as they feed the Correct vastness to establish stability, safety and extended tread wear. To extent contemporary tires, accept into control what end your vehicle Testament serve, what type of driving you Testament be doing, and then account the immensity from the preceding fix of tires to avail figure the amount of your inexperienced allot.
Instructions
1. Inspect the sidewall of the currently mounted tires and fix the tire bigness formula. It Testament be in the format of "P225/50R16." In this formula, P stands for "Passenger Automobile," 225 is the broadness of the tire in millimetres, 50 is the heighth of the tire in millimetres, and R16 indicates the rim dimensions of the tire (16 inches for this example).
2. Determine if you are mounting the tires on a passenger vehicle such as a car, van, light truck or sport-utility vehicle. The beginning letter of the size markings indicates: P for passenger vehicles, including cars, minivans, SUVs and light-duty pickup trucks; LT for light truck-metric, for vehicles capable of hauling large loads or towing large trailers; and T for temporary spare. Choose the appropriate type of tire for your application.
3. Measure the width of your vehicle's rim (the "225" in our example formula) and turn that figure into millimeters. You can put a slightly wider tire on the rim than the rim is wide. However, do not get a tire that is more than 10 percent wider than the rim. Determine the width of the tire. If you measure the width in inches, multiply that by 25.4 to get the proper number of millimeters.
4. So if you have 17-inch rims, it would read "R17." The "R" in this example identifies the tires as being radials, which nearly all passenger tires are.6. Once you have completed the formula for your tires, you know the size tire your vehicle requires. Use that number when shopping online or at a local tire shop to see what variety of brands are available in that size.
5. Determine the last number in the formula by figuring out what size rims you have. In this tire formula: P225/50R16, the car has 16-inch rims. Use the tape measure to measure the distance between the inside of the tire well and the rim. Divide this distance in half (in millimeters). This is the third number in the formula--the tire's height in millimeters ("50" in our example). This measurement is the tire's sidewall aspect ratio.
