![]() ![]() However, the variations are consistent and repeatable, meaning the Air Tool Comp will inflate your tire the same way every time. Our testing found that it reads two psi low for pressures up to 30 psi, then reads between four and five psi low from 35 up to 100. However, the gauge leaves something to be desired when it comes to accuracy. It also means a cleaner workshop: One pump can replace a mountain bike pump with a low-pressure gauge and a road bike pump with high-pressure gauge. ![]() That means it’s easy to read for almost any tire without the hassle of a digital gauge and batteries. The Air Tool Comp V2 has a dual-range pressure gauge: Half of the gauge is for low pressures and runs from zero to 30 psi in one-psi gradients, while the other half is for high-pressure tires and runs from 30 to 120 psi in two-psi gradients. But now it offers one of the smartest too. Specialized already makes a very good floor pump. Gauge is consistent and precise, but not accurate.With tubeless specific systems it is highly encouraged not to go above the recommended safe pressures. Hooked rims and tires are meant to hold tires onto the rim at higher pressures due to the recessed chanel, while hookless function at lower pressures and operate because of the tire pressure and tighter tolerances built into the rim and tire. Lastly, because no two rims are designed the same, it’s extremely important you read the instructions and manual to verify what is the maximum pressure your rim is designed for. Heres a link to help navigate finding your perfect tire pressure. The perfect tire pressure is a range rather than a hard number. Tire pressure is one of the (personal) metrics that can have loads of impact on how you ride. The gauges on these pumps typically have large, easy-to-read markings in one-psi increments that make it easy to dial in a precise tire pressure. However, most struggle to inflate tires to more than 60 psi. High-volume pumps, on the other hand, move a large amount of air with each stroke and are made for filling fat tires very quickly. These will max out between 160 and 220 psi. Generally speaking, if you ride tire pressures higher than 60 psi, you need a high-pressure pump. High-pressure pumps move a smaller volume of air with each stroke and are better suited to filling skinny road tires. BAR is the metric measurement for the pressure in a specific volume. For handheld models, we considered portability and how easily (or not so easily) we were able to pump a tube up to 100 psi with each-a real challenge for such a small device with little leverage.Bicycle tire pressures are measured in PSI (pounds per square inch), which is the Imperial measurement for air pressure used in North America.We looked for pumps that nontechnical folks could disassemble to replace parts like O-rings and gaskets. Bike pumps are simple devices and should last for years, with appropriate maintenance. Whether or not the pump can be serviced.A handle that you can fit both hands on fully, for example, is a good sign, and three-footed pumps are a must-they’re significantly less wobbly than two-footed models. How comfortable and sturdy the pump is.“Is it metal or plastic? Metal tends to be more sturdy and will last a while.” “Look at a pump’s hardware,” advised Chris Haunold. We also prioritized pumps with other metal hardware, like levers and valve attachment points, which are more durable than the equivalent plastic parts. Pumps that have metal barrels-that’s the largest single part of each pump-will have a longer life span, so we focused on those. It also has to work with both Schrader and Presta valves, the two most common types in the US. That means it has to attach securely, remove easily, and be reasonably simple to figure out. How secure the chuck is on the tire valve and how easy it is to use.
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