If you don’t find it there, then you can contact the manufacturer of your semi-truck and ask them for this information. Though it can vary from manufacturer to manufacturer, look for the exact figure usually listed inside the door jamb of most vehicles. What PSI should truck tires be at?įor those of you who are asking – How Much PSI Should Semi-Truck Tires be?Īs a rule of thumb, semi-truck truck tires should be inflated to 105 psi this is the most preferred value by most truckers. The PSI of the semi-truck tire should be checked regularly to ensure that it is always at the manufacturer’s recommended level.Ĭhecking your PSI is easy, with special gauges, and takes a few seconds. A tire’s air pressure is therefore usually measured by the pounds-per-square-inch (PSI) that it holds Moreover, the PSI lays the groundwork for how much weight a tire can carry. In a nutshell, PSI stands for Pounds Per Square Inch, which is the most accurate measurement of the pressure in a tire. PSI is one of the most important concepts you must know as a truck driver. Want to know more about how much psi in semi-truck tires? If so, keep reading to find some interesting facts and information about the same. Moreover, the tire pressures for semi-trucks can vary depending on weather conditions, how much weight the truck is carrying, and the current condition of your truck tires. In general, 105 psi is the recommended value that most truckers prefer as it is not too high, not too low, considering the weight that the truck tires have to carry. Semi-truck tires should typically have 90-110 psi if you are overloading more often than usual, then it can be 120 psi. Therefore, it is wise to ask how much psi should be in semi-truck tires. The packages come with 2 or 4 gauges inside (2 gauges will cover 1 axle).Having incorrect air pressure in a truck tire can have dire consequences. Both hoses are available in lengths of 12’’, 14’’ or 16’’. The gauge is rated for cold and warm operating temperatures in North and South America.Ĭat’s Eye is available with rubber or stainless steel hoses. The gauge is sealed to prevent internal or external water entry and is not affected by vibration or shock. Tire scrub and cupping are greatly reduced on uneven roads.īuilt with a fog resistant dome and non-corrosive materials that will withstand harsh environments and retain functionality. The equalization improves handling and braking. The system equalizes air pressure between dual tires for evenly distributed load pressure and tire wear. An internal check valve provides added safety by preventing both tires from going flat in the event of leak or blowout. The single airing point fills dual tires at once and allows air transfer from one tire to the other, equalizing the pressure in both tires. The eye is designed to remain closed within the correct operating pressure range of your tire and open when underinflated. The yellow eye allows drivers to quickly see if there is a potential safety hazard from underinflated tires. An internal check valve provides added safety by preventing both tires from going flat in the event of a leak, a blow out or when one of the pressure hoses is cut or broken. The single airing point of Cat’s Eye tire pressure monitoring system fills both tires at once and allows air transfer from one tire to the other, equalizing the pressure in both tires. When the eye is completely open, the pressure has dropped significantly and needs immediate attention. The bright yellow “eye” opens up slightly if dual tire pressure falls below the recommended pressure setting. The patented design of the Cat’s Eye tire pressure monitoring system allows drivers and fleet maintenance managers to quickly and easily see if there is a potential safety hazard from underinflated tires. With just a 5% difference in PSI, the smaller tire will be dragged 13 feet every mile. Since duals are bolted together, the smaller tire will be dragged. If the pressure in your duals is not the same, the diameter of the tires will differ. According to Goodyear, underinflation is the #1 cause of tire failure. The Cat’s Eye system also ensures tire pressure is equalized between dual tires – reducing drag and the chance for a blowout. With just a glance, the Cat’s Eye tire pressure monitoring system makes it easy to see if your dual tires are underinflated.
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