Installation of the valve cap onto the valve stem is very straightforward. No special tools, knowledge, or skills are required to install or monitor the device. However, you MUST THOROUGHLY READ AND FOLLOW THE INSTRUCTIONS. Following the step by step procedures included in the package is absolutely necessary for proper installation (97% of customer complaints are due to improper installation caused by not reading and/or following the installation instructions). Since it is self-calibrating, a professional installer is not required for proper calibration. Tire Pressure LED can be installed in just a few seconds! It should not substantially affect the wheel balance once installed, but we recommend that you get your tires balanced with the cap on, especially on motorcycles.