Pressure and effects on tyre’s tread life

As an indication :

• Underinflating a tyre by 10% reduces its tread life by 10%.
• Underinflating a tyre by 20% reduces its tread life by 25%.
• Underinflating a tyre by 30% reduces its tread life by 50%.
• Overinflating a tyre by 10% reduces its tread life by 5%.
• Overinflating a tyre by 20% reduces its tread life by 10%.
• Overinflating a tyre by 30% reduces its tread life by 20%.

Note: a 50% decrease in tread life means that the tyre consumption is doubled and therefore the tyre costs are doubled.

Source: www.finixx.com