The most common cause of trailer tire trouble is under-inflation.
It is important, to always maintain correct air pressure as indicated by the tire manufacturer on the tire’s sidewalls. (Tire pressure information may be listed on stickers elsewhere as a convenience, but because tires may be replaced, the air pressure should always be verified on the tire’s sidewall. If there is a difference between air pressure listings on labels, warning stickers and tire sidewalls, always defer to the tire sidewall air pressure listing.)
Always check the air pressure when the tires are cold. Tires heat up and the air pressure increases after traveling short distances. For safety and convenience, inflate tires to the air pressure indicated on the sidewall of the tire, but always carry a spare wheel and tire in case of unexpected or sudden issues with a tire.