How do changes in ambient temperature and altitude affect tire pressure?
A tire that is inflated to 102 psi at 65° will increase in pressure to around 110 psi at 100°. While altitude does have some affect on air pressure, it is a small one. Pressure will increase about 2 psi for every 5,000 feet of altitude. Instead of worrying about these factors it is more important to determine the correct air pressures for your tires and ensure they remain properly inflated. Top up.giflinefade.