Regardless of whether you have changed thousands of tires, there is still only one correct way to install and change tires used with the TUbliss system. PLEASE read, watch and follow ALL of the instructions EVERY TIME! And do not hesitate to contact us should you have any questions. Note that it is important to use a NEW tire or one that has NOT been previously mounted with a rim lock: OEM and other standard rim locks leave impressions inside the tire bead, allowing air to leak because the TUbliss cannot seal against this damaged surface.