What a great looking tire, and from every angle! Here’s a quick slide show peek (no audio) of the features of the outer rib lugs. All sizes have 18.5/32″ of tread depth. More detailed initial video view coming soon.
Tell ’em you saw it on RoadTraveler.net
May 19, 2021
Copyright James Langan/RoadTraveler. All Rights Reserved
The new Baja Boss A/T offers aggressive looks and smooth performance. The unique, asymmetric tread design is optimized for reduced noise, excellent wet and snow performance with superior on-road handling and off-road traction.
“We are pleased to announce the new Baja Boss A/T tire line, featuring PowerPly XD construction,” said Ken Warner, Vice President of Marketing, Mickey Thompson Tires & Wheels. “This new hybrid tire is a great addition to the Mickey Thompson line. We’ve combined the best features of our popular Baja ATZp3 with new, innovative technology to deliver the best hybrid all-terrain tire for our customers. Baja Boss A/T is a true all-weather tire, ready for anything.”
NEW Mickey Thompson Baja Boss A/T sidewall
The Baja Boss A/T blends Extreme Sidebiters® for a bold look and serious grip with an all-new silica-reinforced compound providing long-wear, all-weather performance and cut/chip resistance.
Baja Boss A/T highlights include:
Large surface area tread elements for a greater contact area
Shoulder scallops for an additional biting edge
Sound-deadening ribs for stability and a quiet ride
Enhanced stone ejectors to reduce debris retention
PowerPly XD™ with 50 percent heavier denier cord on the biased-angled third ply for protection, handling and stability
Rim flange protector for added wheel protection
3 Peak Mountain Snowflake (3PMS) symbol certifies that all sizes 12.50 (315) and narrower are Severe Snow Service rated
50,000-mile treadwear warranty
Increased-load LT-Metric sizing for heavy duty applications
Lower-load floatation sizing for half-ton, lighter trucks and SUVs
Several sizes approved for 12-inch and 14-inch wide wheels including three 35X15.50 sizes
A 35-inch tire approved for 17×6.5 “dually” wheels
The Baja Boss A/T is now available. For the latest updates on the A/T line, and all of Mickey Thompson’s off-road tires, visit www.mickeythompsontires.com.
Fun Countrys walked through every type of terrain with ease.
The Dick Cepek Fun Country
The Dick Cepek brand and the Fun Country tread: the names are icons. Mr. Cepek essentially started the aftermarket industry focused on enthusiast four-wheel-drives in the 1960s. Off-highway tires for the exploding Southern California and Baja desert scene were his initial product, before expanding to include shocks, tire-repair kits, jacks, and the other accessories that backcountry travelers needed and wanted.
At the time, the big rubber companies were content making very narrow and short tires for the OEMs, and were ignoring the burgeoning specialty market. Dick Cepek’s first offering was a farm-implement tread with a DOT rating, the Hi-Way Flotation, made for Cepek by Armstrong.
In 1978 Dick Cepek introduced the first Fun Country, a bias-ply design, which was huge by the standards of the day, 36” tall, 15” wide, made for 15” and 16.5” wheels. The first radial was introduced a couple of years later, and called the F-C.
Since 2003, Cooper Tires has owned Mickey Thompson and Dick Cepek, but these brands are independently operated, and the relationship predates the acquisition by several years. Also in 2003, Dick Cepek introduced the F-C II, which advanced the cult following of both their brand and their unusual hybrid tread design.
Moderate noise, any-terrain traction, and winter grip have been consistent attributes throughout the generations of the Fun Country. My built and heavy 2011 Tundra project ran a set of 33” F-C II during most of my stewardship and thereafter with the new owner. They were removed after covering 47,065 miles, with 5.5/32” of the original 18/32” remaining, for an incredible 3,765 miles per 1/32” of tread depth.
Dick Cepek F-C II tread wore like iron on my 2011 Tundra.
Comparing the Dick Cepek F-C II (L), and latest Fun Country (R).
The current Fun Country was introduced at the 2012 SEMA Show, where it won a Global Media Award. The tread and construction had been updated and improved, though the heritage was clearly visible, including the unusual shaped sipes (like little seagulls), which I’m convinced are part of the secret traction recipe. It was the first aftermarket tire I put on my 2014 Ram Carryall, which was covered in TDR87 (pages 91-92). They performed well but were removed to make room for larger rubber. After a couple years I circled back to the Dick Cepek Fun Country, choosing the much larger 305/70R18 size, 12.5” wide, and a bit over 35” tall.
More Void, Special Sipes, Premium Construction, Specs
Even a cursory glance at the Fun Country will communicate the traction potential. Not a full mudder, and proportionally less noisy (but not quiet), they offer substantially more void to handle sloppy conditions compared to typical all-terrain designs. The first Fun Country was probably the original hybrid design offered to the enthusiast market (decades before hybrid was in vogue), and the newest Fun Country leans toward the aggressive side of the category.
Fun Country is a high-void hybrid traction tire, but not a full-on mudder.
The Fun Country has copious siping for such a high-void tire, just like the previous versions. Every block has at least one of the unusually-shaped seagull sipes, and the bigger blocks have three. Like the tread blocks themselves, the sipes are placed at various angles, which provides biting edges in nearly every direction when compared to simpler designs.
The compound is more cut and chip resistant than the previous F-C II, all sizes feature three-ply sidewall construction and 18.5/32” of depth. The shoulder Sidebiters™ mimic the tread design; they are a whopping 6/32” deep and also have micro siping! Of course, the Fun Country is M+S rated.
Sidebiters™ mimic the tread design, and are a whopping 6/32” deep.
All sizes have 18.5/32” tread, more than some competitors.
The 305/70R18 size is a bit wide for an 8-inch-wide wheel; 8.5” is the recommended minimum. I had zero problems with the 305s on factory aluminum 8” wheels, but some shops might balk at mounting this combination. With a load index of 126, and a 65-psi maximum, each tire is capable of supporting 3,750-pounds, with a speed rating of 99 miles-per-hour. My scale said they weigh 71-pounds each.
305/70R18 supports 110# more per tire at 65 psi than the stock 275/70R18 size at 80 psi.
LT305/70R18 First Spin
Highway manners were excellent at all speeds. The 12.5” wide and 35.1” tall 305s are the tallest and widest rubber I’ve run on my Rams; they did not appear to extract a drivability penalty. The stock wheels keep the tires narrow and tucked under the fenders. There was some minor rubbing on the radius arms at maximum steering lock that removed a little paint (they just barely touched), but this didn’t cause any problems. If the occasional, slight rubbing is a concern, aftermarket wheels are a simple solution. Fourth Generation Rams handle larger tires extremely well. Both Ram 2500 trucks used to evaluate these meats have stock suspensions, not even a so-called leveling kit in front.
On- And Off-Road At GVWR
The 1,400-mile roundtrip highway drive from my home in Northern Nevada, to Flagstaff, Arizona, to attend 2017 Overland Expo West was pleasurable and uneventful. With a truck and camper gross weight of 10,000 pounds, the tires also delivered me to the Southwest for an annual backcountry excursion with a buddy after the show.
Several days were spent exploring and camping in remote places, with hundreds of dirt miles passing under the tread. We started adventuring at Monument Valley, advanced to the Valley of the Gods, and then drove deep into the Manti-LaSal National Forest northwest of Blanding, Utah. It was in this forest that I was able to really test some of the off-highway traction and self-cleaning attributes of the Fun Country.
Off-highway flexing, 25 psi in the fronts with a maximum load.
The trip was in late spring after a wet winter, and we headed for a camp at Deadman Point, 8,700’ above sea level. The shaded spur to this site contained numerous muddy puddles that were from two to several truck lengths long and several inches deep. This was not just a little bit of mud or water; the road often swallowing half of the 35-inch tall tires, submerging my White Knuckle Off Road sliders, scraping crossmembers along the bottom, and packing mud on the differentials.
Chocolate pudding, several inches deep.
Exit on one of the many mud puddles we drove through.
My preferred finesse driving, putting along in low range with minimal fuel from the skinny pedal, combined with the outstanding sloppy traction of the Fun Countrys, pulled me through all of the soft spots. There was no need to spin the tires to help clear the mud-packed lugs after each dunking. They self-cleaned easily at normal trail speeds over the dry sections between the muddy spots.
Leveling the camper at Deadman Point, Manti-LaSal National Forest, Utah. Front tire at 25 psi.
Evaluating longevity can be difficult. The same tread can offer vastly different wear on different vehicles, while the driver and conditions are also likely to skew results, often dramatically. My extensive experience evaluating tires on modern diesel pickups provides a solid foundation.
The weight, diesel torque, and manual transmissions on my rigs all contribute to rapid treadwear regardless of what’s mounted. More wear is typically seen on the rear axle, with much less on the front regardless of the brand or design. During the first 2,000 miles logged, including hundreds off-pavement, wear was an equal 1/32” on both axles. The even wear was atypical, but likely reflected the high percentage of highway miles.
To give this set of Fun Countrys a bigger daily driving challenge after duty on the 2014 Carryall crew cab, they were mounted on a 2016 Ram 2500 crew cab that sees much more commuting and personal-use city driving than my outfits. Harder starts, stops, and faster turning, generally contribute to increased wear compared to steady-state, long-distance travel. After another 12,000 miles, for a total of 14,088 miles, they were down an average of 11.5/32” (two at 12/32”, two at 11/32”). Regular rotations kept the wear even, just a hair over 2,000 miles per 1/32”. This is good for the application, duty-cycle, and aggressive tread deign. With the same 2016 Ram and driver, the OE Firestone Transforce HT lost 8.5/32” of their original 15/32” in 9,942-miles, a mere 1,170 per 1/32”!
Swapping the 305 Cepeks onto the second Ram 2500 tester.
These 35” Fun Country treads are a tight fit on stock wheels, but look great and keep a Fourth Generation narrow.
Wearing evenly with about half the tread remaining.
Most light-truck tires are better than in decades past, yet there are still differences in quality and function. The Deck Cepek Fun Country is a premium traction tire, Made In USA by an American company. The LT305/70R18 we tested are $312 each online from tirerack.com, an exceptional value.
The original and still one of the best, Dick Cepek and sister brand Mickey Thompson don’t advertise as much as some of the competition, though their truck tires are better than ever.
Copyright James Langan/RoadTraveler All Rights Reserved.
A version of this article was also published in the Turbo Diesel Register magazine.