A general guideline is that for every 10°C change in ambient temperature, tyre pressure increases by 0.1 bar, even when the vehicle is not in use. Although this may seem insignificant, it’s important to consider that passenger vehicle tyres typically have only 30-35 PSI. A slight increase in air pressure can have a significant impact on the tyre, potentially leading to a blowout. Furthermore, over-inflation can affect braking performance and cause premature wear and tear.