How it works…

  1. Find the correct tire pressure setting for your car on the label inside the driver’s door; or glove box door or trunk lid. Buy the RightPSI cap for the correct pressure.
  2. Strongly recommended: Clean valve stem with soap and water, dry thoroughly.
  3. Unscrew your tire’s valve stem cap and screw the RightPSI™ cap directly onto the stem securely, using your fingers only.
    – Option #1 for Security: Add a drop of clear liquid seal, like Loctite™.
    – Option #2 for Security: Tighten the 7/16” hex nut on the end of the product with a wrench to secure it a little more tightly.
  4. As you screw the cap on you may hear a little air leaking out. This is normal. Once the cap is tightened fully no air will escape.
  5. Done!

How You Use It:

  • Cap will indicate Orange when your tire is low, Black when it correct and Yellow if you have overfilled.
  • If you need air, pump right through the cap, stopping periodically to check to see if you have filled correctly.
  • If you have overfilled and see yellow, bleed the tire back to black (through the cap) and then screw on the dirt-protector cap when finished.


  • You should always check your tire pressure “cold”, before you drive or have driven
  • RightPSI does not disrupt TPMS systems – it works together with them to help you. If you see orange, fill your tires; don’t wait for the TPMS warning light, because most TPMS systems only indicate when you have a tire that is dangerously (>25%) underinflated.


What is your PSI?

Pounds per square inch

Check the inside of the driver’s side door for the proper pressure fill level for your car. If not there, try looking in your glove box door or trunk lid.

If still not there, check your Owner’s Manual or the car manufacturer’s web site.