Can You Save Fuel with Correct Tire Pressure?

Having the correct tire pressure is important for driving safely and for fuel efficiency, but a lot of us are operating with tires that are under or over inflated. As much as ninety-five percent of a car or truck's weight must be supported by the air pressure in the tires alone, with the tire structure supporting the remaining part. That means correct inflation can have a big impact on tread life and on the ability of the tire to perform over all.

Too many people rely on visual inspections to tell them whether their tires are over or under inflated, but that's not an accurate way to do it. You can't tell whether your tire inflation is correct just by looking. The best way to find out if your tires are in the best shape possible is to measure the pressure in them with a tire gauge. You can get one of these in many different places - most auto and hardware shops carry them. Even most gas station air pumps have a tire gauge attached.

The correct tire pressure for your vehicle will vary depending on the make and model, and may even be different on different wheels. The recommended pressures for personal vehicles can be anywhere from twenty psi to more than fifty psi! Fortunately, you'll find the correct tire pressure for your car in your owner's manual. If you no longer have the manual, you can ask a dealer or look online to find out the pressure to which your tires should be inflated. There may also be a place inside the car, glove box, or trunk which has the tire pressure listed for some vehicles.

Don't just go by the pressure listed on the sidewalls of your tires. That's the maximum tire pressure for this type of tire, not the recommended pressure for the tire. Many people don't realize this and have improper inflation. Most of us under inflate our tires, but some go to far to the other extreme and over inflate theirs. Both are a bad idea. Under inflation is the biggest cause of tire failure and it can cause a lot of problems, including poor braking, acceleration, and steering. Squealing tires are a sign of bad inflation.

All that inefficient movement is also playing havoc with your fuel efficiency. More and more people are being concerned with how much fuel their cars use, and that's smart. After all, vehicles that have tires which are under inflated by ten percent will have five percent more wear and use two percent more fuel. That doesn't sound like a lot, but it adds up at the pump and at the mechanic. Twenty percent under inflation, which many people are driving around on and aren't aware of, brings additional wear up to sixteen percent, and fuel use up to an extra four percent. Tires that are poorly inflated have a higher rolling resistance, and it just takes more fuel to get them moving.

Tags: car tires, fuel economy, suv tires, Tire Pressure, Tires, truck tires

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