Proper inflation is essential for the performance and longevity of the tire. It’s also essential for the ride quality and safety of your vehicle. Your tires carry the entire weight of your vehicle. They cannot do their job properly when underinflated or overinflated. Operating your tires underinflated can also result in a tire failure.
If you don’t know the proper inflation air pressure for your tires, what do you do?
Easy. Check one of the following places on your vehicle:
When it comes to proper tire pressure, the tire’s valve is a very important maintenance item. Valves are ordinarily made of rubber, so they can deteriorate over time. Replace them when you buy new tires. At high speeds, a cracked, deteriorated rubber valve stem can bend from centrifugal force and allow air loss.
The valve cap is also an important item. Buy high-quality valve caps that can help contain the tire’s air, should the core of the valve fail for any reason. Valve caps also keep out moisture, which could freeze and in turn depress the valve core, causing air loss. The cap also keeps out dust and dirt particles, which could also interfere with the proper operation of the valve core and cause air loss.
Balancing compensates for the weight of the tire and wheel assembly after the tire is mounted. A wheel is out of balance when one area is heavier or lighter than the rest. This can cause eccentric treadwear and vibration, plus increase the stress on the front-end parts, causing them to wear prematurely.
At the first sign of vibration or irregular treadwear, your vehicle should be thoroughly checked for wheel balance, alignment, and for worn or broken mechanical parts.
Balancing means compensating for both the weight of the tire and wheel after the tire is mounted. A wheel is out of balance when one area is heavier or lighter than the rest. This:
Have your wheels balanced when:
To balance the wheel, your mechanic will use a balancing machine to determine where the heavy spots are. Weights are then attached to the exterior or interior of the wheel to counteract centrifugal forces acting on the heavy areas when the wheel is turning. This will eliminate vertical bouncing (static balance) and side-to-side wobble (dynamic balance).
Regular rotation helps extend the life of your tires, saving time and money in the long run.
For rotation, each tire and wheel is removed from your vehicle and moved to a different position. This ensures that all of the tires wear evenly and last longer. If no period is specified in your vehicle owners manual, tires should be rotated every 6,000 to 8,000 miles. If you have a full-size spare, it should be included in the rotation process.
Alignment generally refers to the adjustment of a vehicle's front and rear suspension parts. Proper alignment helps ensure that your vehicle handles correctly and will help increase the life and performance of your tires.
Proper alignment helps ensure that your vehicle handles correctly and will help increase the life and performance of your tires.
Daily impacts such as potholes and railroad crossings, as well as more severe circumstances, e.g. accidents, can knock your vehicle out of alignment. You should have the alignment checked if:
Alignment involves adjusting the angles of the wheels so that they have the proper toe in and camber. The three main adjustments made in alignment are camber, caster, and toe. View the animation below to understand the three main adjustments made during alignment, or continue reading for more details.
Caster is a bit tough to define. If you’re viewing the side of a vehicle, the caster angle identifies the forward or backward slope of a line drawn through the upper and lower steering pivot points. Think of a motorcycle and its front steering forks and front tire. Its angle is towards the rear of the motorcycle, so it has positive caster. Negative is just the opposite. Long story short, positive caster helps your vehicle go straight, much like the motorcycle.
Camber is the angle of the wheel, in degrees, when viewed from the front of the vehicle. Positive camber is when the top of the wheel is leaning out from the center of the car. Negative camber is when the top of the wheel is leaning into the car. If the wheel leans too far from the center, uneven wear will occur. (However, negative camber helps racing cars improve cornering.)
Toe is the difference in the distance between the front of the tires and the back of the tires. Usually, tires are set so that they are parallel with each other. If the fronts of the tires are closer, the wheels are toe-in. If the rears of the tires are closer, the wheels are toe-out.
Camber is the angle of the wheel when viewed from the front of the vehicle. If the wheel leans too far, uneven wear will occur.
The camber angle is designed and adjusted for each vehicle to keep the tires flat on the ground during a turn. If there is too much difference between the camber settings on the front wheels, the vehicle will tend to pull sharply to one side.
Picture a caster wheel found on furniture or a shopping cart. When you push a shopping cart equipped with caster wheels, it tends to roll in a straight line because the wheels line up.
On a vehicle, caster is the forward or rearward tilt of the steering axis, measured from the top of the tire, as viewed from the side. The axis is formed by extending an imaginary line through the upper and lower steering knuckles. The line extends through the upper and lower ball joints on vehicles with front control arms, and through the lower ball joint to the center of the strut mount on cars with struts.
Caster is set so that your vehicle will tend to go straight ahead. Caster affects your vehicle’s low-speed steering and high-speed stability as well as how well your vehicle drives in a straight line (on-center feel). Negative caster will cause your car to "wander" and make it feel unstable at high speeds. Positive caster causes hard steering and can also result in excessive road shock and shimmy. Caster does not affect tire wear
Toe is the difference in the distance between the front of the tires and the back of the tires. Toe settings affect the handling characteristics of a vehicle while turning.
Tire orders can be placed online or in Club. Sorry, no phone orders.
Availability of items may vary by Club location. Items available only while supplies last.
Only tires purchased from BJ’s Wholesale Club will be installed by a BJ’s Certified Tire Center Associate. Tires purchased elsewhere will not be installed.
Prices are subject to change at any time and subject to state and local taxes where applicable. The final decision to install a tire on a vehicle will be made by the BJ’s Certified Tire Center Associates. The tire must meet all vehicle manufacturer’s safety standards and specifications.
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