Discoverer AT3 4S™

Fits SUVs/CUVs and Trucks/Pickups All-Season

Discoverer A/T3 4S™ is rated 5.0 out of 5 by 6.
  • y_2018, m_11, d_13, h_17
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.8
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_6
  • loc_en_US, sid_457_SUVS_CUVS, prod, sort_[SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_coopertire
  • bvseo_sdk, net_sdk, 3.2.0.0
  • CLOUD, getAggregateRating, 39ms
  • REVIEWS, PRODUCT

Standard Limited Warranty
Free 45-Day Road Test
105,000 km Treadwear Protection - Euro-Metric Sizes

 

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.

  • On road comfort with off-road durability
  • Maximum grip and handling on wet roads
  • Stops on average over 20 feet shorter on snow*

Severe Weather Rated

Features

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.

Handling

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.

Tire Design

  • Snow Groove Technology

    Patented saw-tooth technology traps snow in the tread to provide superior snow-on-snow traction.

  • Aqua Vac™ Channels

    Uniquely shaped, deep center grooves improve the tire's resistance to hydroplaning.

  • Secure-Grip™ All-Terrain Design

    Specially designed 5-rib all-terrain pattern provides greater off-road driving capability and improved wet/dry traction.

  • 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 Size Service Description UTQG Load Range Sidewall Approved Rim Width Measured Rim Width Section Width Overall Diameter Tread Width Tire Weight Max Load Tread Depth (1/32")
235/75R15 109T 620 A B XL OWL 6 - 8 6.5 9.3 28.74 6.73 34 2271 14
235/75R15 105T 620 A B STD OWL 6 - 8 6.5 9.3 28.74 6.73 31 2039 14
265/75R15 112T 620 A B STD OWL 7 - 9 7.5 10.5 30.55 7.72 39 2469 14
225/70R15 100T 620 A B STD OWL 6 - 7.5 6.5 9 27.68 6.97 31 1764 13.5
255/70R15 108T 620 A B STD OWL 6.5 - 8.5 7.5 10.3 29.09 7.95 38 2205 14
265/70R15 112T 620 A B STD OWL 7 - 9 8 10.9 29.65 8.27 39 2469 14
225/75R16 104T 620 A B STD OWL 6 - 7.5 6 8.6 29.13 6.38 30 1984 13.5
235/75R16 108T 620 A B STD OWL 6 - 8 6.5 9.3 29.72 6.73 33 2205 14
245/75R16 111T 620 A B STD OWL 6.5 - 8 7 9.6 30.31 7.05 37 2403 14
265/75R16 116T 620 A B STD OWL 7 - 9 7.5 10.5 31.57 7.72 41 2756 14
215/70R16 100T 620 A B STD OWL 5.5 - 7 6.5 8.7 27.72 6.89 29 1764 13.5
225/70R16 103T 620 A B STD OWL 6 - 7.5 6.5 9 28.66 6.97 32 1929 13.5
235/70R16 106T 620 A B STD OWL 6 - 8 7 9.4 28.82 7.4 33 2094 13.5
245/70R16 111T 620 A B XL OWL 6.5 - 8 7 9.8 29.45 7.64 36 2403 13.5
245/70R16 107T 620 A B STD OWL 6.5 - 8 7 9.8 29.45 7.64 36 2149 13.5
255/70R16 111T 620 A B STD OWL 6.5 - 8.5 7.5 10.2 30.04 7.95 38 2403 14
265/70R16 112T 620 A B STD OWL 7 - 9 8 10.8 30.39 8.27 42 2469 14
235/75R17 109T 620 A B STD OWL 6 - 8 6.5 9.3 30.75 6.85 35 2271 14
255/75R17 115T 620 A B STD OWL 6.5 - 8.5 7 10 31.97 7.44 39 2679 14
235/70R17 109T 620 A B XL OWL 6 - 8 7 9.5 30 7.44 37 2271 13.5
245/70R17 110T 620 A B STD OWL 6.5 - 8 7 9.7 30.47 7.72 37 2337 13.5
255/70R17 112T 620 A B STD OWL 6.5 - 8.5 7.5 10.2 31.18 7.91 41 2469 14
265/70R17 115T 620 A B STD OWL 7 - 9 8 10.7 31.42 8.27 43 2679 14
P285/70R17 117T 620 A B STD OWL 7.5 - 9.5 8.5 11.5 32.76 8.94 46 2833 14
215/65R17 99T 620 A B STD OWL 6 - 7.5 6.5 8.7 28.15 6.77 31 1709 13
235/65R17 108T 620 A B XL BLK 6.5 - 8.5 7 9.5 29.21 7.52 35 2205 13
245/65R17 111T 620 A B XL OWL 7 - 8.5 7 9.5 29.53 7.68 37 2403 13
255/65R17 110T 620 A B STD OWL 7 - 9 7.5 10.2 30.16 8.19 36 2337 13
265/65R17 112T 620 A B STD OWL 7.5 - 9.5 8 10.6 30.59 8.5 41 2469 13
235/60R17 102T 620 A B STD OWL 6.5 - 8.5 7 9.6 28.31 7.64 32 1874 12.5
255/70R18 113T 620 A B STD OWL 6.5 - 8.5 7.5 10.2 32.13 8.07 42 2535 14
265/70R18 116T 620 A B STD OWL 7 - 9 8 10.7 32.64 8.39 44 2756 14
265/65R18 114T 620 A B STD OWL 7.5 - 9.5 8 10.7 31.54 8.54 42 2601 13
275/65R18 116T 620 A B STD OWL 7.5 - 9.5 8 11 32.13 8.74 43 2756 13
265/60R18 110T 620 A B STD OWL 7.5 - 9.5 8 10.7 30.55 8.62 41 2337 12.5
275/60R20 115T 620 A B STD OWL 7.5 - 9.5 8 10.9 33.03 8.86 44 2679 12.5
275/55R20 117T 620 A B XL OWL 7.5 - 9.5 8.5 10.9 31.93 9.13 44 2833 12.5
265/50R20 111T 620 A B XL OWL 7.5 - 9.5 8.5 10.6 30.51 8.78 42 2403 12.5

Reviews

Rated 5 out of 5 by from Excellent all around tire! After much research I purchased a set of Cooper AT3-4S's for my AM General Mobility Ventures MV-1 DL. I was looking for a tire to support a heavy vehicle and provide good traction on a variety of surfaces, Gravel, Mud and moderate Snow, and Dry & Wet pavement. I found out how good the stopping performance on wet pavement was soon after I bought them when I had to make an emergency stop on a slick wet road. The traction was amazing! There were several things about these tires that surprised me: The ride quality and handling was a major improvement over my former tires (Generals). I had expected these tires to be noisy due to the semi-block tread design, they aren't! They are quiet and make no more noise than my old street tires. I also expected them to be "rock throwers" on gravel, much to my surprise they don't pick up rocks in the tread. I definitely got more than I had expected with these tires, these tires are not a compromise, they provide excellent performance on and off pavement. I appreciate the fact that Cooper Tires are made in America. I highly recommend them!
Date published: 2018-10-26
Rated 5 out of 5 by from Can I give them 7 Stars? I bought Discovery A/T3 4S, 235/75/15. After having them mounted I drove around town and and the ride was fantastic! I was thinking the ride was so smooth that i thought the tire guy filled them to 30PSI. I then headed up to the mountains. 85 MPH on the freeway and the the ride was still great and very quite. Hit the mountain road and they cornered GREAT! I pushed them hard in to some corners and they complained a little (Cornering tire noise) but they held there ground and held the cornering line that I forced them into. All the time on the mountain road i was thinking they are handling great considering they had only 30 PSI in them, or do they? At the top of the mountain I checked the air ready to fill them and they were all filled to 38 PSI!! That great of a ride and filled to 38 WOW!! On the way down the hill and coasting (at 55MPH) I could not hear any tire noise over the wind noise with the windows down!! Coasting in to turns hard and could just barely hear any tire noise. Theses tires are great very happy and impressed, I will never buy another "BADYEAR" tire ever again!!! I bought them on Amazon and on top of all this They were a great price too. $25 more than the "Badyear" that I had on there but they are SOOOO much better than the BadYear crap, all my cars will now be wearing Coopers.
Date published: 2018-10-22
Rated 5 out of 5 by from Great ride I replaced the tires on my new 2018 Tiguan changing out the 215/65R17 factory tires for 235/60R17 Cooper Discoverer A/T3 4S. Initially I was worried that the aggressive tread would be loud. I found the new tires to be only very slightly louder than the OEM highway tires. But the ride was way better, very plush with lots of cush and they are great off road. Very happy with them. The also look great and have that tough look.
Date published: 2018-09-08
Rated 5 out of 5 by from Solid Improvement Over the Original! The new A/T3-4S has set a new standard in the world of all-terrain tires. Raising the bar higher than its predecessor could ever hope to reach, the 4S will likely transform the way your truck or SUV handles. The new Adventurer rides like a touring tire on smooth roads, but it bites harder than the average A/T tire on loose gravel, mud, and soggy grass. On wet pavement, however, is where this tire really shines. The 4S make it as though you are driving on a dry road, even as the rain dumps buckets. Hydroplaning does not seem to be an issue, either. You can tell that Cooper has spent a lot of time perfecting the wet traction capabilities of the A/T3. Now, time will tell how these tires do in the snow and ice, but the Severe Weather symbol stamped on the sidewall has me feeling optimistic. The original A/T3's admittedly did leave a lot to be desired in winter weather, but hopefully Cooper's attempts to address that issue will prove to be a success.
Date published: 2018-07-21
Rated 5 out of 5 by from These look amazing! I have a 2016 Ram 1500 with the 20 inch stock wheels. It was time to replace the 275/60/20 tires that came on the truck. I do lots of highway driving back and forth to work. Besides that, I drive around town and occasionally off road. I wanted a tire that looked awesome and gave the truck a little aggressive off-road look, but would still be beneficial on the street. I went to my local tire shop and told them I wanted the AT3 4S tires and they had them in the next day. I got them installed on my truck and it is such a big difference from the stock wrangler sr-a tires! These tires improve the overall look of the truck so much that its almost like having a new vehicle! I've only driven them for about a week but they are very quiet on the highway and are a much more comfortable ride than the stock tires. By how they look I'm sure they will perform well off road and during the winter months. The stock picture of these tires do no justice to how they look and how meaty they are. They are also a great price compared to similar tires. With a 65,000 mile warranty, its a no brainer. If you want a tire that looks like a beast and is also practical for street driving, this is the one to get!
Date published: 2018-07-18
Rated 5 out of 5 by from No compromises! The most common (and often true) perception is that to get a great highway tire, you sacrifice off pavement capability in a big way. Go aggressive for off-road and you're left with a heavy tire that's not as comfortable to ride or handle on the highway. Couldn't be further from the truth with these new 4S tires! They hook up superbly on dry or wet pavement, connect in sharp switchbacks and mountain roads with ease. They are whisper quiet on the road (even moreso than the already-quiet GYs I had on the truck), soak up bumps in the road while still giving you a good tactile road feel, they grip extremely well when wet, and are a challenge to make spin on dirt and gravel. If you're looking for a tire that's the best of both worlds and don't want to weigh down your rig while getting a tire that performs superbly on the pavement while being extremely capable for your offroading adventures it's hard to imagine a tire performing much better than these! Basically it seems Cooper combined elements from the 3 center ribs that were present in the original AT3s, added the alternating, scalloped shoulder lugs (similar to the ATP), deeper center grooves + a much more aggressive looking sidewall to create the new AT3 line. And at a great value! With these tires only weighing in at 42 lbs in my size (265/70/16) and load (SL) I barely feel the extra weight vs. my stock tires but I certainly feel the improvements in comfort, handing, weather, dirt and gravel! Only 1,000 miles on them so far but if they hold up for 1/2 the tread-wear warranty I'll replace them with another set of the same! Will update once I can properly comment on tread-wear, snow, and overall durability but so far I'm expecting them to hold their own no matter what I throw at them!
Date published: 2018-07-09
  • y_2018, m_11, d_13, h_17
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.8
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_6
  • loc_en_US, sid_457_SUVS_CUVS, prod, sort_[SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_coopertire
  • bvseo_sdk, net_sdk, 3.2.0.0
  • CLOUD, getReviews, 2ms
  • REVIEWS, PRODUCT

Videos

Warranty

Standard Limited Warranty
Free 45-Day Road Test
105,000 km Treadwear Protection - Euro-Metric Sizes


Download the 2018 Consumer Replacement Tire Guide, Limited Warranty & Registration Booklet.

Reward

70 Discoverer AT3 4S™
  • Stopping distance as compared to leading all-terrain tires, based on performance against top competitors from a leading consumer publication. Individual on-road results may vary.