The road and weather of your specific location may call for a more particularly selected tire than the factory could reasonably offer. You may live in the rain soaked Northwest, where wet roads are common, or in the arid Southwest, where arrow straight roads dominate the landscape; or you may live within the snowy reaches of the Rockies; or in a place with a combination of all three. You have to have the right tire for your weather conditions. Of course, the vehicle you drive is the other side of the equation. And how you like to drive finishes out the tire selection formula.