The Schwalbe Airmax Pro digital air pressure gauge is highly accurate. It measures tire pressure up to 11 bar and is suitable for both car and Presta valves. It can also measure air pressure with traditional bicycle valves, but only in conjunction with the Schwalbe valve insert.

Tip: Test the air pressure at least once a month with a pressure gauge. The well-known thumb check is extremely unreliable. Even at only half the required air pressure, most tires still feel hard. Insufficient air pressure is very common with bicycle tires. The result is drastically increased rolling resistance and premature tire wear.