Do all tires on a car have to be the same size?

Not all tires on a car have to be the same size. Tires are typically sized based on the dimensions of the wheel rim they are designed to fit, and different wheels can have different sizes. For example, a car may have smaller tires in the front and larger tires in the rear. In addition, cars that are designed for towing or off-road use may have even larger tires.

Here is a table of some common tire sizes:

| Tire size | Rim size | Vehicle type |

|---|---|---|

| P195/65R15 | 15 inches | Small passenger cars |

| P215/60R16 | 16 inches | Mid-sized passenger cars |

| P235/55R17 | 17 inches | Large passenger cars |

| LT235/75R15 | 15 inches | Light trucks and SUVs |

| LT285/75R16 | 16 inches | Heavy-duty trucks and SUVs |

When selecting tires for your car, it is important to consult with a qualified mechanic or tire technician to ensure that you select the correct size tires for your vehicle. Using tires of the wrong size can negatively affect the vehicle's performance, handling, and safety.