Just knowing the model of your car might still not tell you everything there is to know, like what tires might fit on it. One model of car may have a variety of features, equipment, shapes, sizes, options, and details. These variants might be known as the trim level, version, or even body styles.
Differences of trim levels might include two-door and four-door versions, multiple engine or powertrain options, wheel/rim size, or even body features like wings, ground effects, etc.
This may sound confusing but think of another simple type of product that we encounter every day that has similar attributes and variations of a model: A t-shirt. When purchasing, there are different sizes, and with each size there are different colors, neck styles, sleeve lengths, and even total shirt lengths.
Many factors may come into play when comparing tires to the make and model of vehicle you are driving, such as the vehicle's body style, total weight, and how much weight the vehicle should carry – all of which can help determine the tire that best fits that model car.