Before heading out on the Trans America Trail, I wanted a larger and better mud terrain tire on the 2019 ‘Loan Ranger’. My tire of choice for all TRS off-road Rangers is the Cooper Discoverer STT PRO.
I got a set of 265/70/17 mud terrains on this 2019 Ford Ranger FX4. Here they are mounted on the factory wheels with no lift, and no rubbing! And yes, I turned the wheel back and forth to check clearance.
Stock: 265/65/17 (30.40×10.40×17)
Coopers: 265/70/17 (31.93×10.70×17)
The new tires are 1.53-inches taller than stock, so the truck picked up 3/4″ of ground clearance.
In the next (2) photos, you can see that there is still room between the tires and the crash bars (the rectangular bars that extend out from the frame in front and behind the tire)
Here are the (5) Cooper Discoverer STT PRO mud terrains. I got (5) so I would have a spare, and mounted it on the factory spare wheel. The larger spare still fit under the truck in the original spare location.
I love these tires. They’re far superior than the factory Dynapro’s.
About The Author
Jim Oaks is the founder of The Ranger Station, one of the longest-running Ford Ranger enthusiast communities on the web. He has spent over three decades owning, modifying, repairing, and driving Ford Rangers on the street, trail, and cross-country routes.
Since launching TheRangerStation.com in 1999, Jim has documented thousands of real-world Ranger builds, technical repairs, drivetrain swaps, suspension modifications, and off-road tests contributed by owners worldwide. His work has been referenced by enthusiasts, mechanics, and off-road builders looking for practical, experience-based information rather than theoretical advice.
Jim’s hands-on experience includes long-distance overland travel, trail use, drivetrain and axle upgrades, suspension tuning, and platform comparisons across multiple Ranger generations. The content published on The Ranger Station is grounded in first-hand experience and community-verified data, not marketing claims or generic specifications.