This makes a used tube too large to use in a new tire, which could cause a wrinkle and lead to tube failure. When used in accordance with the Tire and Rim Association's recommendations and all other applicable standards, tubeless tires may be operated with tubes approved for the appropriate tire sizes and applications on tube-type wheels. The red dot or triangle indicates the circumferential location of the light spot on the tire. This mark should be aligned with the valve stem or the tube balance mark when mounting the tire. These are the tire vent markings which allow for normal diffusion of air or nitrogen through the tire's sidewall.
Green dots indicate tubeless tires, while white dots indicate tube-type tires.
This venting prevents pressure build-up in the cord body. The amount of diffusion through the vent holes will vary. All aircraft tires of nylon construction undergo a certain amount of stretch after the tire has first been inflated to operating pressure. The shelf life of a tire is entirely dependent on the storage conditions. Proper storage of tires includes keeping them away from fluorescent lighting or other bright light, electrical motors, oil or chemicals, and sharp objects.