Determining What Size of Tires You Need The correct tire for your vehicle will be a unique combination of different variables including the width, height, and diameter of the tire, as well as a combination the tire's load capacity rating and speed ability. Vose And Sons Piano Serial Number Location. To find out what size tires you need and what speed/load rating your vehicle requires, check your owner's manual. If the information is not listed there, it can usually be found inside the door jamb of the driver's door, inside the glove box door, or inside the fuel tank hatch. If you can't find the information in any of these locations, read the information off of the sidewall on your existing tires. Here is an example of the types of numbers you want to look for. Download Free Leading And Managing In Nursing. Kanye West Graduation 320 Kbps Mp3 Encoder there. Your vehicle is equipped with a tire pressure monitoring system that requires a sensor to be installed in the tire and wheel assembly for proper operation.