For instance, one an example of the Toyota Tundra we checked, the recommended tire pressure stood at 30 PSI, while both the Toyota Camry and RAV4 had recommended pressures of 35 PSI.

Sarah Robinson, a driving-safety expert at Michelin, said the manufacturer’s recommended tire-pressure level dates back to the beginning of a vehicle’s development process.

Consumer Reports deciphers the cryptic sidewall codes on a typical tire, explaining how to decode tire size, load index, maximum pressure, speed rating, and more. Ad-free. Influence-free.