Choosing the right-sized tire for your car can be as simple as checking the tires already installed (or using our tire selector). You’ll also find the recommended tire size, as well as the speed and ...

Vehicle speed (mph), engine speed (rpm), tire diameter (inches), trans gear ratio, and rear axle gear ratio are all interrelated. If you know four out of five of these values, you can determine what ...

We've explained dozens of times over the years the difference between P-metric and imperial tire sizes so we won't cover a whole lot of the same ground, but we really haven't published a conversion ...

Many drivers give little thought to the sizes of their wheels and tires except for cosmetic purposes. But, wheel size — and the size of tires you put on them — matter. Using improper tires can be ...

What type of tires does my car need? How many miles will the tires I'm considering last? How much do I want to pay? Should I go with a straight replacement set or upgrade my tires? Already know about ...

Vehicle speed (mph), engine speed (rpm), tire diameter (inches), trans gear ratio, and rear axle gear ratio are all interrelated. If you know four out of five of these values, you can determine what ...