What PSI should cold tires be at?
Most passenger cars will recommend 32 psi to 35 psi in the tires when they’re cold. The reason you check tire pressure when they’re cold is that as tires roll along the road, friction between them and the road generates heat, increasing both the temperature and the air pressure.
Should I inflate tires to max PSI when cold?
Tire manufacturers have a recommended psi, which dictates an optimal pressure level for your car and its tires. However, that psi number is set for when your tires are cool. Ideally, when you add air to your tires in the wintertime, you should fill them up when they are still cool.
What does max cold PSI mean?
A tire’s maximum inflation pressure is the highest “cold” inflation pressure that the tire is designed to contain. However the tire’s maximum inflation pressure should only be used when called for on the vehicle’s tire placard or in the vehicle’s owners manual.