The letter at the end of the size (for example 97Y) is the maximum speed the tire can sustain when it is properly inflated and not overloaded.
| Rating | Max speed | Typical tires |
|---|---|---|
| S | 112 mph | Economy and some winter tires |
| T | 118 mph | All-season, winter |
| H | 130 mph | Touring, grand touring all-season |
| V | 149 mph | Sport sedans, hot hatches, performance all-season |
| W | 168 mph | High performance summer |
| Y | 186 mph | Ultra-high performance summer, most German performance cars |
| (Y) | Over 186 mph | Supercars and top-speed rated fitments |
Does it matter?
Yes. A speed rating also reflects how well a tire handles heat and how it feels at speed. Stay at or above your car's original rating, which is on the door placard or the factory tires. Performance cars from BMW M, Audi RS, Mercedes-AMG and Porsche usually call for Y or (Y).
Winter tires are the common exception: a lower rating is allowed, but you are limited to that speed while they are on the car.
Still not sure?
Add your car and we'll show only what fits, or send it to our team for a free fitment check.