Maintenance & Care

Tire Pressure

Optimum Performance Begins with Proper Tire Pressure.


Tires perform best when inflated to match vehicle and axle loads. Steer tires often require maximum inflation pressure to carry the steer axle load, while drive and trailer tires should be set at pressure corresponding to actual tire loading.

The impact of maintaining proper air pressure cannot be overstated. Not only does it ensure that your tires run at their peak performance and with peak fuel efficiency, it contributes to providing the safest driving experience possible.

To help keep your tires properly inflated, check out this easy-to-use Inflation Pressure Calculator. And be sure to check out this short video with tips on how and when to check air pressure to improve your fuel efficiency, protect your tire investment, and maximize safety on the road.


Understanding Differences in Tire Inflation


Proper performance requires proper inflation. Under- or overinflated tires can negatively impact tire life and traction.

Underinflation
Underinflated tires can’t maintain their shape and become flatter, causing over-deflection, internal heat build-up, increased rolling resistance and reduced fuel economy.
  • 20% underinflation can reduce tire life 30%
  • 30% underinflation can reduce tire life 40%
  • 40% underinflation can reduce tire life 50%
Underinflation

Proper Inflation
Proper inflation is critical for the performance of your tires. When a tire is inflated properly, it’s load is equal on all ribs or elements, giving a square footprint shape.

Proper Inflation

Overinflation
Overinflated tires tend to have a short shoulder rib contact area, causing scrubbing action, uneven wearing of the shoulder rib and placing more strain on the contact area.

Overinflation

Related Information

Maintenance & Care

Mounting & Vibration
Alignment