TireTek Flexi-Pro Tire Gauge Help

The TireTek Flexi-Pro Tire Pressure Gauge is built to last with a tough steel casing, solid brass movement & fittings, with a reinforced acrylic display window and rugged ‘gear-style’ surround to protect your gauge from day-to-day drops and knocks. No plastic used!

Yes! The 45° rotating chuck design offers the great advantage of a perfect viewing angle on the gauge, regardless of the position where tire valve is sitting. However for best results with this design we recommend using a slightly different technique to standard ‘straight’ chuck tire gauges when lining up the gauge on the tire valve stem to take a reading without air leaking.

We have found with the rotating 45° chuck design that the best technique is to hold the gauge with your thumb directly behind the chuck head, rather than the main body when pressing the gauge to the tire stem. Either using the one-hand or two-handed technique (see below). In this way you should be able to take pressure readings with much greater control and minimal to no air loss.

  TIP:  See the ‘How To: Take An Accurate Tire Pressure Reading’ user guide and video below  

Yes, the TireTek Flexi-Pro Tire Pressure Gauge will retain the pressure reading when removed from the tire valve until the pressure release / bleed button is pressed on the side of the gauge stem. You can also take an accurate pressure reading while still on the tire valve, like a standard gauge, however this is a very useful feature to have when trying to read the dial in bad light conditions for example.

Yes! While the TireTek Flexi-Pro Tire Pressure Gauge is pressed on your vehicle’s tire valve and showing a reading, press the button on the side of the gauge. This will allow you to release air to deflate or ‘bleed down’ your tire pressure. You can keep an eye on the pressure reading by periodically releasing the bleed button to check pressure, easily reducing tire pressure to the exact level desired.

  TIP:  A more detailed guide and ‘How To’ video are shown under the ‘User Guides’ section below   

Our Flexi-Pro Tire Gauge is a highly accurate mechanical pressure reading instrument, designed with a fully geared, solid brass precision movement and bronze bourdon tube movement mechanism. Unlike traditional plunger-type gauges or modern Digital tire pressure gauges, the bourdon tube movement is not affected by changes in temperature, humidity, altitude or air stream contaminants. Our certified mechanical tire pressure gauges will perform reliably at low temperatures and do not rely on batteries to work!

ANSI is the acronym for the American National Standards Institute, a non-profit organization that oversees the development of voluntary consensus standards for products in the United States.

B40.1 is the specific standard that has been issued by ANSI for pressure gauges, with dial-type pressure gauges having four grades of accuracy: A, B, C, and D.

All of our TireTek tire pressure gauges meet ANSI B40.1 Grade B specifications, which is the highest accuracy standard typically used for tire pressure measurement (with ‘A’ being the most accurate and used mainly for industrial applications).

In practice the ANSI B40.1 Grade B certification means that the mechanical accuracy rating of our tire pressure gauges will be ± 2% from 25% to 75% of scale and ± 3% below 25% and above 75%. So a 60 psi range tire gauge is accurate to ± 1.2 psi from 15 to 45 psi and is calibrated to ± 1 psi at 30 psi.

Modern calibration is performed by computers using electronically controlled mechanical adjusters to fine-tune the components. The TireTek range of modern Bourdon tube movement mechanical tire pressure gauges are precisely rolled and calibrated in this way to specific dimensions that should not require any further calibration over their lifespan.

The TireTek Flexi-Pro Tire Pressure Gauge will fit all vehicle tire valves and bicycle tires with the standard Schrader tire valve. If you have a high-performance road bike with a Presta type valve fitting, a set of Presta-to-Schrader valve adapters can typically be purchased for around $5.