What lubricant should be used when mounting a tire?

When mounting a tire, the appropriate lubricant to use is tire mounting paste. This type of lubricant is specifically designed for tire installation and helps facilitate the mounting process without damaging the tire or the wheel. Tire mounting paste typically has properties that allow for easy application, provides a sufficient grip when fitting the tire onto the rim, and helps in creating a good seal to prevent air leaks.

Using tire mounting paste also minimizes the risk of tire slippage during installation, ensuring that the tire is seated properly on the rim. In contrast, other lubricants such as silicone spray, grease, or engine oil can adversely affect the tire and the seal, potentially leading to issues like slippage or deterioration of the rubber material. Therefore, tire mounting paste is the safest and most effective option for this purpose.