Cooper
Discoverer® AT3 4S™
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All-Season
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65k mi Warranty
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3PMSF
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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.
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
112.0 -
Speed Rating
T -
Uniform Tire Quality Guage (UTQG)
620/A/B -
Measured Rim Width (in.)
7.5 -
Section Width (mm)
255 -
Revs Per Mile
665 -
Max Load (lbs)
2469 -
Max Inflation Pressure (PSI)
44 -
Outside Diameter (in.)
31.18 -
Tread Depth (in 32nds)
14 -
Tire Size
255/70R17 -
Approved Rim Width (in.)
6.5-8.5