What do you do when you’ve explored every FJ Summit trail in the Ouray-Silverton-Telluride area multiple times? Find something new.…Read More
The goal was to escape the August Texas heat and land me in an ideal spot for the solar eclipse.…Read More
We have had an on-again, off-again relationship with Cooper Tires ever since we purchased our 1998 4Runner in 2006. We…Read More
"You know you’d love another project, you need one." —Angie Williams More true words have never been spoken. If you’ve…Read More
The goal was to escape the August Texas heat and land me in an ideal spot for the solar eclipse. My plan was to start in Colorado by hitting sections of the Enchanted Rockies Trail, stop off at Canyonlands National Park for an early morning sunrise photo at Mesa Arch (bucket list item), head north into Glacier National Park, Waterton Lakes National Park in Alberta, Canada, Yellowstone and Grand Teton National Parks, then finish the trip by meeting a group of fellow Toyota off-roaders in central Wyoming for the solar eclipse.
I already had a long list of things I wanted to get done for my 2007 4Runner, but planning didn’t stop there. I had just sold my XVenture trailer in hopes of buying a teardrop style enclosed trailer rugged enough for medium difficulty trails. This meant getting a new trailer ready. For eclipse preparation, telescope and lens filters had to be researched and ordered. Wildlife photography was my primary goal in the national parks, so I bought a few guidebooks on where to locate wildlife. Books don’t do much good if you don’t have time to read them, and time was quickly working against me as the trip date approached.
Singer 240-amp Alternator and NorthStar 27 AGM Battery
My 4-year-old 31 group Marine battery had already toasted 2 alternators, and was struggling to stay above 50% after 3 days of being parked. The need for a new battery and a higher output alternator prior to the trip was the top priority. I jumped on a group buy for a NorthStar 27 group AGM battery. Having edited Brian Patton’s dual battery article in the Spring issue of TCT Magazine, I knew about Singer Alternator. Knowing I would be charging a 2nd 27 group battery located in the trailer while driving, the higher amperage was a requirement. After spending an hour on the phone with Mike Singer, I was confident the recommended 240-amp alternator with lifetime warranty was the right solution. Toyota specialist Pablo Moreno, owner of Tandem Automotive in Fort Worth, TX, did the alternator install and testing. During the alternator swap, he noticed my belt tensioner was in bad shape and possibly wouldn’t make the journey. Glad he discovered it before I hit the road.
Kenwood DMX7704s and Kenwood CMOS-230 Backup Camera
My 4Runner came with the JBL audio system, which sounds pretty good. However, at 173,000 miles, the head unit was suffering signs of potential failure. For a replacement, I wanted a large screen, but the units with built-in navigation cost nearly double of those without. I also didn’t want a CD/DVD player. The Kenwood DMX7704s seemed like the ideal solution: priced at $500, 7-inch screen, no CD/DVD, digital equalizer, and it comes with a GPS antenna, but no navigation software. Instead, it relies on a smartphone to provide the navigation software via Apple Car Play or Android Auto. Coupled with the TYTO-01 amp interface, the Kenwood unit utilizes the JBL amp and the result is an improved sound quality. Even Sirius XM sounds great. I added the Kenwood CMOS-230 Backup Camera for safety.
4x4 Labs Rear Bumper with Dual Swingouts
My previous rear bumper had a single swingout, which became quite heavy when spare tire, HiLift Jack, and 2 cans of fuel were attached. I struggled to get it closed at times. Worse, I couldn’t open it when a trailer was attached. I sought out a dual swingout solution that would meet my needs and decided on the 4x4 Labs model. In addition to designing the rear bumper to my specs, Luke at 4x4 Labs suggested I go with the optional drop-down aluminum table and drop-down cutting board. I placed the order and started psyching myself up for the install—there were 2 install steps that had me a bit nervous: cut off the rear crossmember, and cut 3-inches off the rear frame. Doing so allows the bumper to be positioned further into the truck while serving as the new rear crossmember. The swingouts come with small shocks to prevent slamming them shut. The table and cutting board drop-downs are mounted with bicycle quick-release axles, and can be removed when not traveling. The bumper angles offer superb clearance and the fabrication pieces offer excellent protection.
GOBI Roof Rack and Front Runner Monsoon Bag
I always wanted a GOBI. My previous 2 roof racks were lower cost solutions, but lacked the ability to haul gear securely and were noisy. I joined in on a group buy and 3 months later, I had the roof rack I should’ve purchased years ago. My aluminum travel boxes fit snuggly in the rear while the Front Runner Monsoon Bag fits securely in the middle. I used a pair of Front Runner Stratchits to keep the bag to the rack. The newly released bag (see the New & Noteworthy section of this same issue) is waterproof, rugged, and carries a sizeable amount of cargo. The bag has an air release valve, which is necessary to open when sealing the bag. Once the bag is tight, close the valve and everything inside stays dry. I was in the Colorado Rocky Mountains for 2 days of solid rain, while the bag was mounted on the roof rack. All of the bag contents remained dry.
To get your copy of the
Summer 2017 Issue:
We have had an on-again, off-again relationship with Cooper Tires ever since we purchased our 1998 4Runner in 2006. We initially ran a set of their Adventurer A/T and a set of their Discoverer S/T tires before embarking on a five-year, 82,000 mile fling with remolded tires. That fling ended tragically last July with a sidewall failure and blowout as we were traveling through Montana. It was then that I reachedout to our readership to ask which tire you would want us to review. Much to my surprise, you overwhelmingly asked for us to review the Cooper Tire Discoverer S/T MAXX. So, we reached out to Cooper Tire, and three weeks later I had five brand new 285/75R16 tires sitting at my house.
As with its more aggressive sibling, the Discoverer STT Pro, the Discoverer S/T MAXX utilizes Cooper’s patented 3-ply “Armor-Tek3®” construction, which consists of a full 3-ply carcass. The third ply is overlapped at an 8-degree angle to produce a 66% stronger and 2.5 times more tear resistant side wall compared to the Discoverer S/T. The S/T MAXX also features a new, and proprietary, cut and chip resistant blend of natural and silica-based rubber compound for the tread. Cooper Tires’ goal with combining these two elements into the S/T MAXX was to produce a tire that is “built for demanding off-road use to give you the confidence of having a tire that is built to last.”
I explained the backstory at the beginning to set in your mind where I am coming from when writing about my experience with the Discoverer S/T MAXX. Over the last year our set of Discoverer S/T MAXX tires have seen just under 10,000 miles of mixed driving. They have seen everything from hot pavement to muddy back country roads and snowy winter driving. So now that we are a year in to running them, I would like to take the opportunity to reflect on how well the S/T MAXX tires have performed.
Dry Pavement Traction
I am starting with the dry pavement traction first because I believe this is the only area where I found the S/T MAXX to be, well, underwhelming. It wasn’t good, but it wasn’t bad. I say this after driving for over five years on softer remolded tires. The S/T MAXX’s cut and chip resistant tread compound, I believe, makes for a harder/stiffer tread which provides less grip than I am used to. This is not to say that I slid all over the highway while driving but did have to slow down while cornering on roads I have been driving for the last five years.
Wet Pavement Traction
I was surprised when, after driving on dry pavement for a few weeks, we experienced our first monsoonal rainstorm. Much to my surprise the S/T MAXX performed beautifully. Even in a heavy downpour and standing water on the roadway, I experience little to know hydroplaning. I attribute this to the tire’s 4-5 rib tread pattern and the natural and silica rubber compound.
Off-road traction is really where the S/T MAXX shines. Whether driving on dirt and gravel roads, sand, or muddy water crossings: this tire chews up the terrain. It is a far contrast from my experience on dry pavement. Without a doubt, these tires either find traction or they somehow make it. Even with open differentials, I have only struggled to find traction twice in the last year. The first was when I buried the 4Runner to the frame in snow and had to use our MAXTRAX to get out. The second was an off-camber corner where one back tire slid into a gully and I had to be pulled out.
As with my experience driving on dry pavement, I found the S/T MAXX to provide average traction during the winter. I believe the cut and chip resistant rubber tread compound limits the tire’s ability to find grip when driving on snow and ice. We experienced several weeks of sub-zero weather here in Central Wyoming and the cold weather only proved to cause the tread rubber to become even stiffer.
Because I run these tires year-round I chose to not run studs in the tires.
After running a remolded copy of the Goodyear MT/R for over five years, I had forgotten what it was like to not hear the MT/R whine. It boggles my mind that the S/T MAXX are so quiet driving down the highway and interstate, considering the aggressive tread. All of our tires balanced beautifully with minimal counter weights which is a great test of build quality. Our four primary tires remained balanced until I installed the ARB internal TPMS kit, which forced a rebalance.
Tread & Tire Life
As I mentioned earlier, we have driven just under 10,000 miles on this set of four Discoverer S/T MAXX tires. In that time, I have had the tires rotated three times and have experienced zero issues. A quick survey of our four primary tires revealed zero chipping or other tread damage. A quick measure showed that the tires have lost 3.5/32nds. If this wear rate stays consistent, we should easily see this set of tires lasting 45-50,000 miles before they would need to be replaced when the tread reaches a depth of 2/32in.
I am also pleased overall with how well the tire has lasted. The sidewalls, despite rubbing up against curbs, rocks, and tree roots, still look great and show no signs of damage. I am also pleased overall with how well the tire has lasted. The sidewalls, despite rubbing up against curbs, rocks, and tree roots, still look great and show no signs of damage.
I came back to Cooper Tires thanks to you, our readers, and I am glad I listened to your request for this tire review. Despite my gripes with its dry and winter traction, I have really enjoyed driving on the Discoverer S/T MAXX tires. I would, without reservation, recommend this tire to anyone looking for an aggressive all-terrain tire that is capable of tackling demanding backcountry trails and doesn’t compromise a daily commute. This is not to say that the Discoverer S/T MAXX is the perfect tire. As with everything, there are tradeoffs. I believe the MAXX sacrifices some on-road performance in favor of off-road performance, and that is something I am okay with.
Vehicle & Tire Specifications
To get your copy of the
Summer 2017 Issue:
"You know you’d love another project, you need one."
More true words have never been spoken.
If you’ve followed our publication for long you’ll know that we've always tried to focus on interesting topics, vehicles, and ideas to help get you out into the great unknown with your Toyota truck or SUV. Our journey has been covered in great detail within these pages.... now the next chapter begins.
As our lives change, so do our needs for daily transportation and weekend exploration. Our original TRD FJ Cruiser served us well for nearly 10 years, however as our family grew, we had to move on. Our 2007 GX-470 was a great vehicle, but came along around the same time that we needed to do a 'flagship' build (See TCT Explorer 2015-2016). The Tundra is still by all accounts almost the perfect exploring vehicle, and will be missed in our stable. Alas, daily driving, mileage, and my 'need' for a new project all resulted in our latest vehicle. "Project 4"
The Lexus GX 460 is by no means an unknown or unproven vehicle. In most parts of the world, this platform is known as the Toyota Land Cruiser Prado 150. It's closely related to the 5th Gen 4Runner, and enthusiasts throughout North America already have great builds for inspiration.
So why is the 460 the best fit for our next project?
First, its Land Cruiser & Toyota heritage means that we know it will be a solid truck for many years. Ours is a 2012 model with just over 70,000 miles on the clock. Just barely broken in from a Toyota perspective.
Also, the newer version of the GX includes the more efficient 4.6L 1UR-FEV8 engine, the same that powers small V8 Tundra trucks. At 301hp and 329ft lb of torque we have plenty of power to get us anywhere we want to explore. That power also hauls or pulls whatever gear is required for just about any adventure.
Finally, since the 460 debuted in 2010 as a luxury vehicle, they are just now starting to price down to what we consider a 'normal' level for an off-road or overland build. Finally, since the 460 debuted in 2010 as a luxury vehicle, they are just now starting to price down to what we consider a 'normal' level for an off-road or overland build.
Unlike the TCT Explorer, which was essentially a show truck with a thirst for dirt, the GX will be more of a 'sleeper'. We're two months in and so far, we've only added tires (See Economical A/T Sidebar). Next on the list are sliders from Metal Tech 4x4, followed by a fully tuned suspension with minimal lift from Toytec Lifts. We’re also looking at a Pioneer rack system from Rhino Racks, USA as a great lightweight option. Beyond those basic modifications, we'll see where the wind takes us.
Our goal for the GX-460 is to show how with very little effort, a luxury SUV can be configured to travel anywhere a North American family wishes to explore.
Follow us on Facebook, Instagram, and within the pages of this magazine to see how the GX-460 is an amazing family overland explorer! Follow us on Facebook, Instagram, and within the pages of this magazine to see how the GX-460 is an amazing family overland explorer!
Economical A/T (Sidebar)
We expect to own the GX-460 for many years, so we'll likely try many sets of tires for the truck, which is primarily daily driver along with very little towing, and some trail use.
The choice for our first set seems like it was 'meant to be'. Let me explain. Less than one week before FJ Summit XI we suffered a small hole in an old tire, so we needed something quickly. Price is always a consideration, but we also knew we needed to move from a standard passenger tire to a slightly more aggressive all terrain, while maintaining as much efficiency as possible.
A search of available options in our area led (as it almost always does) to Discount Tire. I found the economical "Trailfinder" A/T at the local store, but couldn't find any information about it online. More of an entry level tire than other options, this tire is exclusive to DT and is offered as "dependable performance and excellent value", and comes with a 45,000 mile warranty. That equals about two years of daily driving and a few off-road trips. Also, since this is a very new offering with little information published, it presents the perfect opportunity to test an entry level, economic option. Follow us on Facebook, Twitter, and Instagram as we post updates on this tire over the next few months and years.
Load Rating: 116 (2705lb)
Weight: 9lb/tire heavier than OEM (36lb total)
To get your copy of the
Summer 2017 Issue: