Going for something a bit more aggressive like mud or sand, things begin to get a bit different. While both tires are equal if the mud is shallow, in deeper patches, the Open Country AT3 is slightly ahead of the Discoverer AT3. It’s not a massive difference, but it’s there if you look for it. On the off-road side of things, the XLT has a feature that its cousins from the Discoverer AT3 lineup don’t have.
The Assurance Fuel Max is Goodyear’s top-tier all-season tire for minivans, sedans, and coupes. These tires are designed with superb fuel economy in mind. On average, a set of four Cooper tires will cost around $600 while a set of four Goodyear tires will cost about $800-$1000 more expensive at an average price range of about $1,200-1,400. The two tire companies are known for their quality products, but they also have different prices depending on what size of tire you need.
Cuprins
Delivers most of the off-road performance of a mud-terrain tire, but without compromises
The Nitto Trail Grappler has a bold open shoulder design that provides excellent traction in many different conditions, even mud and snow! This tire is also great because it looks cool with its black sidewall and sizeable white lettering. Both tires will deliver very good performance in lighter conditions like gravel roads. The Open Country A/T III and Discoverer AT3 XLT are more than up for the task of delivering superb grip and traction on gravel or dirt.
The A/T3-XLT offers promising on-road traction in dry conditions due to its next-generation silica compound that gives it a considerable grip on the road. Its tread pattern constitutes a big surface area to make contact with the surface of the road and provides a valid grip by increasing the rolling resistance of the tire. Besides that, its wide shoulders add to its on-road handling. However, it cannot beat extreme weather conditions because the grooves are not large enough to avoid hydroplaning in those conditions. It’s apparent at first glance that the Cooper Discoverer AT3-XLT is not your average, all-terrain tire. The AT3-XLT sports an aggressive tread that stands out more than the “ho-hum” treads found on many other makes.
Goodyear Fierce Attitude M/T
This makes this tire of the in the run-flat category ever. All three tires on this list come with Cooper’s limited warranty protection. Most off-road tires lack the standard mileage warranty, so Cooper’s case isn’t extraordinary. Besides, the company allows customers to test-drive these models for a 45-day period and accepts returns made within that time frame.
When hauling the camper, we typically run with 65 psi in the front, and 80 psi in the back, the pressures recommended by Ram for our 2013 Ram 3500 truck. To improve the ride with the camper off the truck, we usually run 65 psi in the front, and 45 psi in the back. So far, we’ve put over 8,000 miles on the set, rolling on pavement, dirt, gravel, rocks, and sand in all kinds of weather including snow and ice. In those eight months, we’ve taken our truck camper rig to Arizona, Nevada, Utah, California, Oregon, Washington, and Idaho.
Bridgestone Vs Michelin Tires Which Is The Better Tire Brand?
This Cooper tire, indeed, is an excellent option for the increasing number of outdoorsy people. I can not give you a long term on them, i sold my 3rd gen. before i had 10,000 miles on them, and my 17 SR5 only has 10k on it, but i like the performance of them. I still cringe even looking at those tires on someone else’s rig with all the issues I had over 15k miles. Mud release dimples aid in keeping the tread pattern free of loose soil. The Cooper Discoverer STT Pro is backed by a limited tread warranty. Uniformity is guaranteed for the first 2/32 inch of wear.
In terms of on road comfort, ST Maxx is the clear winner as it has comparatively lower void ratio. Lower void ratio means lesser space for the air particles as the air collides with the tread walls and create noise. So this tire produces less noise while STT Pro is way more louder due to its much wider voids, which provide much space for air particles to resonate. Comparison of ST Maxx and AT3 is very interesting as both have a closed tread pattern unlike STT Pro.
All Terrain Tire Tests
In both cases, you will notice a slight jolt when you hit a larger hole, and they can feel a bit nervous if the surface you’re driving on isn’t smooth. Tires designed to be good at multiple aspects are only good and don’t compare with the dedicated ones, which is something that some owners will be fine with. Having one set of tires for on and off-road use is good enough as long as they don’t do anything extreme.
These are quieter, more smooth, and better at cornering in a 37×13.5r20 than my 35×12.5r18 Nitto Trail Grapplers. As the tire is packed with superb selling points, we were thrilled to bits purchasing a value-for-money product, rather than pining over our money on fuel cost. In our opinion, as long as we can chill and enjoy our ride, fuel economy is not a problem.
Will they deliver good off-road performance?
For the Discoverer AT3 XLT, Cooper used a Durable-Tread Technology featuring a silica compound that can resist shredding. The end result should be a tire that won’t get destroyed after a quick drive in the wilderness. Plus, the stone ejection technology is there to ensure that rocks don’t get stuck in the grooves and damage the tire. Aggressive, powerful, and highly durable, the Discoverer STT Pro is a force to be reckoned with in the market of off-road tires. In summary, Cooper STT Pro is a tire for loose grounds.
All the tread is full of wide grooves, the grooves between shoulder lugs are the widest while central part also has much wide lateral grooves. This tire has numerous bold and long stone ejectors placed all over the tread. The tread depth of this tire is the highest among all the competitors. Despite the all-season badge, the Discoverer AT3 XLT has a 3PMSF rating, meaning that snow performance shouldn’t disappoint. To back the rating up, Cooper designed it with the Snow Groove Technology, which works to improve through the rubber compound and tread design. The softer rubber combined with the zig-zag sipes and biting edges of the blocks should ensure that the traction on snow is better than tires with an M+S rating.
Cooper Discoverer ST Maxx vs. STT Pro vs. MTP: Comparison Table
Rugged terrains like rocks and gravel require a tire that is strong, resilient, and robust. The A/T3-XLT is made of a strong silica compound that enables it to withstand harsh terrains. It features rugged shoulders that protect its upper sidewall from puncture and cuts.
The braking distance is another area where the results are very close. Both tires have decent stopping power, resulting in distances that are still well above the class average. I’m replacing these with ANOTHER set of the same exact tire, because they have given me ZERO issues since I purchased them, and because they have been proven in MY real-world testing.
Goodyear Ultra Grip Ice WRT
As far as the ST MAXX goes, I haven’t sold too many sets of those, so I really dont have a lot of hands on experience like I do with the others. I can say they wear great on bigger trucks (think f250/350, ram 2500, etc). I’ve put a few sets on trucks that do a lot of towing, but wanted a more aggressive look, and they seem to do great. As far as off road capabilities, I have no idea, probably about as good as the AT3, but not as good as STT.
Most Common Causes Of A Flat Tire & How To Avoid Them
Unlike the first two options, the MTP lacks 3-ply construction, likely explaining its subpar off-road performance. In general, the concern about this tire is that it has 2-ply sidewall. However, it also features staggered blocks and alternating scallops on the shoulders that somewhat improves the performance on tough terrains. On soft snow STT Pro wins again due to its higher void ratio. The soft snow particles are grabbed in the grooves and as the vehicle accelerates, they are thrown backwards, same as mud particles.
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