P-Metric Sized Tires

All vehicles now use passenger-metric (P-metric) sized tires. P-metric tires are available in two load ranges: standard load with 210 kPa (30 psi) maximum pressure and extra load with 240 kPa (35 psi) maximum pressure. Most passenger vehicle tires are standard load. Most P-metric tire sizes do not have exact corresponding alpha-numeric tire sizes. For example, a P205/75R15 is not exactly equal in size and load carrying capacity to an FR78-15. For this reason, replacement tires should be of the same TPC specification number (same size, load range, construction) as those originally on the vehicle. If P-metric tires must be replaced with other sizes, a tire dealer should be consulted. Tire companies can best recommend the closest match of alpha-numeric to P-metric sizes within their own tire lines. The metric term for tire pressure is the kilopascal (kPa). Tire pressure may be printed in both kPa and pounds per square inch (psi). One psi equals 6.9 kPa. Refer to the tire placard or "Specifications" for tire pressures.