Understanding Your Tires
What Do the Numbers on Your Tire Mean?
Every tire has a code on its sidewall (like P215/65R15 89H) that tells you its size, load capacity, and speed rating.
Here’s what each part means:
Code
Meaning
Description
P
Passenger
Indicates a tire for cars, minivans, and SUVs
215
Tire Width
Width in millimetres (sidewall to sidewall)
65
Aspect Ratio
Ratio of height to width (%)
R
Radial Construction
Most modern tires use radial design
15
Rim Diameter
Size of wheel rim (in inches)
89
Load Rating
Max weight per tire (580 kg / 1,279 lbs)
H
Speed Rating
Max speed = 210 km/h
Pro Tip: Always match or exceed your vehicle manufacturer’s tire specifications for the best safety and performance.