All new vehicles come with tires that are considered by the vehicle manufacturer to be the best suited for the vehicle. When it comes time to replace the tires, it is recommended to install tires with the same size, load index and speed rating.
Tires are the single most important safety feature on your car. Tires are the only thing that connects the car to the road, and life-saving technologies like antilock brakes and electronic stability control cannot do their job if the tires don't have a good grip on the pavement. And yet tires are one of the least-understood, under-rated components of our cars.