Wander and noisy for an AT
Switched over from discoverer at3 xlt and hated them. They wandered and had much more road noise. Was able to track down another set of at3 xlts
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Switched over from discoverer at3 xlt and hated them. They wandered and had much more road noise. Was able to track down another set of at3 xlts
Size 295/70/18 on a 2016 GMC Sierra 3500HD SRW with Duramax. First, let me say that I was going to reorder a set of Nitto ridge grapplers, until I saw the price increase. I then started doing my homework because I really loved the Nittos but I was looking for something different and a little more affordable. These Strongholds check every box. I have only 1k miles on them, which include 2 snow storms ( I plow with ny truck ) a winter rain storm, and towing a 10k pound machine. These tires deliver amazing handling in all conditions and they balanced with minimal weights. If you're looking for something American made for work and play, I highly recommend the Cooper Stronghold tire.
Have had these tires for about 2 weeks now. Southern newyork. Have had snow and ice for about a month now. These tires have been absolutely fantastic in every condition. Whether the snow is soft or packed and icey they keep digging. Great traction on solid ice and deep mud. Had the rugged treks before these. They were the best tires I've ever run. Think these strongolds might end up being better. Got 60k out of the rugged trek in a v84runner full time 4 wheel drive. They got loud as they wore but recommend any discoverer tire.
So far very impressed with my Cooper Discover Stronghold AT 275/65R20 only have 500 miles on them, quite on the road noise, after about 60MPH I do hear some road noise but really nothing, feel very good on dry pavement, steering is right on, no feeling of drifting on turns, tires are 5lbs less then the Maxxis Razr AT tire so I'm hoping for better MPG still reads the same They balance very nice the tech told me, mounted on Impact Off Road 829 Rims. No rain or snow or off-road use yet, but I'll get there. I live in Michigan The looks are very impressive, also very aggressive tread, side wall pattern looks great too. 2022 Ram 1500 Laramie 2" level kit, S&B CAI, MBRP Exhaust
The Cooper Discoverer Stronghold AT is a rugged all-terrain tire designed for light trucks, Jeeps, and SUVs. It comes with a specialized rubber compound and an all-terrain tread, featuring wide grooves for effective self-cleaning. The tire also has a specially designed shoulder with scooped edges and sidewall hooks for improved lateral traction, as well as reinforced lugs for enhanced durability. Moreover, the Discoverer Stronghold AT is Three Peak Mountain Snowflake-rated for severe winter conditions and is backed by a 60,000-mile limited manufacturer tread life warranty.
Features & Benefits

Category |
Vehicle |
Mileage Warranty 60 k |
Load Index 2679 lbs/2469 lbs (115/112) |
Max Speed 106 MPH (R) |
Load Range E (10 Ply) |
Sidewall Blackwall |
Tread Depth 16/32nds |
Inflation Pressure 80 PSI |
Part Number 170303048 |
Tread Design Symmetrical |
Tire Weight 38.07 lbs |
Section Width 8.78" |
Rim Range 6.00-7.50" |
Overall Diameter 29.29" |
Three-Peak Mountain Snowflake (3PMS) Yes |
Any info you'are still looking for? |
Yes, the Cooper Discoverer Stronghold AT is designed with a heavy-duty tread formulation and robust internal construction for great durability.
Yes, the Cooper Discoverer Stronghold AT is Three Peak Mountain Snowflake rated for severe winter service.
Discoverer Stronghold AT ∙ 28 sizes available