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Home|Tire details
Three-peak mountain snowflake
The Discoverer AT3 4S™ with Adaptive-Traction Technology™ grips the surface, rocky or smooth, under the most severe weather, hot or cold, wet or dry.
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Dry performance
The tire's ability to grip the road in dry conditions.
Wet performance
The tire's ability to grip the road in wet conditions.
Tread wear
The wear rate of the tire.
Quiet ride
The measure of how quiet a tire is while driving.
How the tire is able to respond to driving such as accelerating, braking, steering and turning.
Off road
The tire's ability to have grip on unpaved surfaces such as dirt, mud, sand, rock or gravel.
*When compared to other Cooper® tires
  1. Snow groove technology
    Patented saw-tooth technology traps snow in the tread to provide superior snow-on-snow traction.
  2. Secure-grip™ all-terrain design
    Specifically designed 5-rib all-terrain pattern provides greater off-road driving capability and improved wet/dry traction.
  3. Micro-gauge™ zigzag sipes
    Smaller gauge sipes in all tread blocks provide increased vehicle stability and control, while reducing stone retention and drilling. Zigzags create more biting edges for optimal wet/dry traction.
Full specs

Tire specifications

There are 41 tire sizes available
Tire sizeWidthAspect ratioLoadSpeed ratingMax speedSidewallRoll resistanceWet gripNoise levelEU label
285/45 R 22 XL28545114H130EC75
275/45 R 22 XL27545112H130EC73
275/55 R 20 XL27555117T118Outlined White LetteringEC73
275/60 R 2027560115T118Outlined White LetteringEC72
265/50 R 20 XL26550111T118Outlined White LetteringEC73
255/50 R 20 XL25550109H130EC73
275/65 R 1827565116T118Outlined White LetteringEC72
265/60 R 1826560110T118Outlined White LetteringEC72
265/65 R 1826565114T118Outlined White LetteringEC72
265/70 R 1826570116T118Outlined White LetteringEC75
255/70 R 1825570113T118Outlined White LetteringEC72
P285/70 R 1728570117T118Outlined White LetteringEC74
265/65 R 1726565112T118Outlined White LetteringEC72
265/70 R 1726570115T118Outlined White LetteringEC72
255/65 R 1725565110T118Outlined White LetteringEC72
255/70 R 1725570112T118Outlined White LetteringEC72
255/75 R 1725575115T118Outlined White LetteringEC72
245/65 R 17 XL24565111T118Outlined White LetteringEC72
245/70 R 1724570110T118Outlined White LetteringEC71
235/60 R 1723560102T118Outlined White LetteringEC71
235/65 R 17 XL23565108T118EC72
235/70 R 17 XL23570109T118Outlined White LetteringEC72
235/75 R 1723575109T118Outlined White LetteringEC71
225/65 R 1722565102H130Outlined White LetteringEC71
215/65 R 172156599T118Outlined White LetteringEC71
265/70 R 1626570112T118Outlined White LetteringEC72
265/75 R 1626575116T118Outlined White LetteringEC72
255/70 R 1625570111T118Outlined White LetteringEC72
245/70 R 16 XL24570111T118Outlined White LetteringEC72
245/75 R 1624575111T118Outlined White LetteringEC71
235/70 R 1623570106T118Outlined White LetteringEC71
235/75 R 1623575108T118Outlined White LetteringEC71
225/70 R 1622570103T118Outlined White LetteringEC71
225/75 R 1622575104T118Outlined White LetteringEC71
215/70 R 1621570100T118Outlined White LetteringEC71
265/70 R 1526570112T118Outlined White LetteringEC72
265/75 R 1526575112T118Outlined White LetteringEC72
255/70 R 1525570108T118Outlined White LetteringEC72
235/75 R 15 XL23575109T118Outlined White LetteringEC72
235/75 R 1523575105T118Outlined White LetteringEC71
225/70 R 1522570100T118Outlined White LetteringEC71
Tire care

Tire care

Tire inspection
Keep an eye out for potential problems that might affect your tires.
What is the EU label on a tire and can I use it?
Driving on any tire that does not have the correct inflation pressure is dangerous.
Tire safety tips
How to get the most out of your tires.