The tire size 315/80R22.5 is a common heavy-duty truck or bus tire size. Here’s what each part means:
What the numbers mean
315 → Tire width in millimeters (315 mm wide)
80 → Aspect ratio (height is 80% of the width)
R → Radial construction (standard for modern tires)
22.5 → Rim diameter in inches
Visual breakdown
Typical applications
This size is usually used on:
Heavy-duty trucks (semi-trailers)
Buses
Commercial transport vehicles