MAINTAIN PROPER INFLATION PRESSURE IN YOUR TIRES.
Proper inflation pressure is necessary for optimum tire performance, safety & best fuel economy. To maintain proper inflation pressure, frequently check tires (when they are cool) with an accurate tire pressure gauge. For example, it is difficult to tell just by looking at radial tires whether they are under inflated.
Always maintain inflation pressure at the level recommended by the vehicle manufacturer as shown on the vehicle placard or in the Owner's Manual. Higher inflation pressure increases stiffness which may deteriorate ride & generate unwanted vibration.
Tire footprint & traction are reduced when van, pickup or RV tires are over inflated for the loads carried. In particular, tires with aggressive tread patterns may contribute to oversteer or "roadwalk" if inflated beyond the inflation pressure specified in the Owner's Manual & vehicle placard for standard or customary loads. Over inflation also increases the chances of bruise damage.
Under inflation is the most common cause of failures in any kind of tire & may result in severe cracking, component separation or "blowout," with unexpected loss of vehicle control & accident. Under inflation increases sidewall flexing & rolling resistance resulting in heat & mechanical damage.
Furthermore, when operating a vehicle equipped with radial tires, it is difficult to notice when a tire has gone flat or near flat since the "feel" of the vehicle does not change significantly.
A tire is a pneumatic system, which supports a vehicle's load. It does this by using a compressed gas (usually air) inside to create tension in the carcass plies. It is important to realize that a tire carcass has a high-tension strength, but has little or no compression strength. It is the air pressure that creates tension in the carcass & allows the tire to function as a load-carrying device. That's why inflation is so important. In an inflated, but unloaded tire, the cords pull equally on the bead wire all around the tire. When a tire is loaded, the tension in the cords between the rim & the ground is balanced or relieved. The tension in other cords is not changed. Therefore, the cords opposite the ground pull upwards on the bead. This is the mechanism that transmits the pressure from the ground to the rim.
In addition, a tire must transmit handling (acceleration, braking, cornering) to the road. Cornering forces are transmitted to the rim in a similar manner to load. Acceleration & braking forces rely on the friction between the rim & the bead. Inflation pressure also supplies the clamping force, which creates friction.
A tire also acts as a spring between the rim & the road. This spring characteristic is very important to the vehicle's ride.
Too high an inflation pressure causes the tire to transmit shock loads to the suspension & reduces a tire's ability to withst& road impacts.
Too low an inflation pressure reduces a tire's ability to support the vehicle's load & transmit cornering, braking & acceleration forces.
Finding the optimum inflation pressure requires extensive engineering efforts on the part of tire & vehicle manufacturers.
|Avon tires||Dunlop tires||Goodyear tires||Michelin tires||Uniroyal tires|
|BF Goodrich tires||Firestone tires||Hankook tires||Pirelli tires||Yokohama tires|
|Bridgestone tires||Fuzion tires||Hoosier tires||Sumitomo tires||Discount tires|
|Continental tires||General tires||Kumho tires||Toyo tires||Wheels|