Final answer:
To investigate low air pressure in a tire, check for a hole visually or with soapy water to identify any air escaping. Feeling the tire can also reveal air leakage. A warm location can increase tire pressure due to expanding air, while applying outside pressure and listening for air can detect leaks.
Step-by-step explanation:
The most logical way to investigate why your tire had low air pressure is to check for a hole in the tire. This can be done by inspecting the surface of the tire visually or by using soapy water and looking for bubbles. If there is a hole, air may be escaping, causing the pressure to drop. Another approach is to feel the tire for air escaping. If you can sense air coming out from a specific spot, it could indicate a puncture or leakage.
Additionally, placing the bike in a warm location can help increase the tire pressure. As the temperature rises, the air inside the tire expands, leading to an increase in pressure. This can be a sign of a normal pressure drop due to the temperature change. Lastly, applying an outside pressure to the tire and listening for air escaping can also help identify any leaks or punctures.
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