What does ST mean on a trailer tire?

ST stands for Special Trailer, and these tires are designed with stiffer sidewalls to handle heavy loads and reduce swaying compared to passenger tires.

How do I read the size on my trailer tires?

You can find your trailer tire size on the sidewall, typically listed as a code like ST235/80R16 which indicates the width, aspect ratio, and wheel diameter.

Can I use passenger car tires on my trailer?

Using passenger tires on a trailer is dangerous because they lack the necessary load capacity and stability, which can lead to severe swaying and tire failure.