The air pressure in your spare tire should be the same as which of the following?

The air pressure in your spare tire should match the highest pressure tire on your vehicle because maintaining proper tire pressure is crucial for vehicle safety and performance. Each tire on your vehicle is designed to operate at a specific pressure, which ensures optimal handling, fuel efficiency, and tire longevity.

Typically, the manufacturer's recommended tire pressures can be found in the owner's manual or on the sticker located inside the driver's side door. The spare tire is often not used at the same time as the other tires, but when it is needed, it must perform at an optimum level just like the others. Therefore, aligning the pressure of the spare tire with the highest pressure tire ensures that it will be ready for use when needed and function safely alongside the other tires.

Setting the spare tire pressure to match the highest pressure also helps prevent under-inflation, which could compromise handling and safety when the tire is put into service. This matches well with manufacturer specifications and helps ensure uniform performance across all tires on the vehicle.