Cooper
Discoverer® AT3 4S™
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All-Season
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65k mi Warranty
Does this tire fit your vehicle?
Enter your vehicle or tire size information first to see if this tire fits. Then you’ll be able to take a look at relevant, detailed specs.
Tire Features
Adaptive-Traction™ Technology grips the surface, rocky or smooth, rain or shine.
Snow-Groove™ Technology provides outstanding grip in snow.
Aqua Vac™ Channels help resist hydroplaning during heavy rain.
A specially-designed 5-rib all-terrain pattern provides impressive off-road driving capability and improved wet/dry traction.
Tires designed for use in severe snow conditions and meet specific snow performance test requirements.
Warranties & Guarantees
Our satisfaction pledge gives you 45 days to decide whether to keep select tires or exchange them for a different set of tires.
Exclusions apply; see full warranty for details.
Learn MoreThis tire is eligible for the Standard Limited Warranty.
Exclusions apply; see full warranty for details.
Learn MoreWe know you want to get the most out of your tires. That’s why we confidently back this tire with a warranty that helps protect you in the case of premature treadwear.
65,000 mi./ 95,000 kmExclusions apply; see full warranty for details.
Learn MoreFull Specs
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Load Range
SL -
Load Index
115.0 -
Speed Rating
T -
Uniform Tire Quality Guage (UTQG)
620/A/B -
Measured Rim Width (in.)
7.0 -
Section Width (mm)
255 -
Revs Per Mile
649 -
Max Load (lbs)
2679 -
Max Inflation Pressure (PSI)
0 -
Outside Diameter (in.)
0.0 -
Tread Depth (in 32nds)
14 -
Tire Size
255/75R17 -
Approved Rim Width (in.)
6.5-8.5