Is it okay to increase the standard tire pressure from 2.3 to 2.5 bar?
2 Answers
It is acceptable to increase the standard tire pressure from 2.3 to 2.5 bar. The standard tire pressure typically ranges between 2.4 and 2.5 bar, while reinforced tires have a recommended pressure of 2.8 to 2.9 bar. However, tire pressure should never exceed 3.5 bar. Hazards of overinflated tires: Reduced friction and adhesion, affecting braking performance; steering wheel vibration and deviation, leading to decreased driving comfort; accelerated wear on the central tread pattern, shortening tire lifespan; increased vehicle vibration, indirectly impacting the longevity of other components; excessive stretching of tire cords, reducing elasticity and increasing the load on the vehicle during operation. Hazards of underinflated tires: Increased friction coefficient with the road surface, leading to higher fuel consumption; heavy steering and tendency to deviate, compromising driving safety; excessive movement of tire parts, causing abnormal heat generation due to over-compression; degradation of cord and rubber functions, potentially leading to delamination, cord breakage, or damage to the bead area from excessive friction with the rim, resulting in abnormal wear.
I think it's acceptable to increase the tire pressure from the standard 2.3 bar to 2.5 bar, especially if you frequently drive long distances. I've personally tried this adjustment and indeed noticed a slight reduction in fuel consumption—roughly gaining an extra few dozen kilometers per tank. However, the ride becomes noticeably bumpier, compromising comfort to some extent. Additionally, seasonal factors should be considered. In summer, when temperatures are high, tire pressure may rise automatically, and overinflation could increase the risk of a blowout. It's best to measure tire pressure when the car is cold and adjust it according to the recommended values on the door pillar, avoiding arbitrary increases. Some SUVs or family cars come with factory settings on the lower side, so minor adjustments are fine, but exceeding 3 bar is not advisable as it accelerates wear on the center of the tire—safety should always come first. Developing a habit of checking tire pressure monthly can extend tire lifespan, saving money and ensuring peace of mind.
