Yokohama Geolandar M/T Tested for the Backcountry

    Geolandar M/T

    Jay KopycinskiPhotographer, Writer

    Like many of you, we have a trail truck that spends a good amount of time on trails but is also driven good distances on the pavement. We’d ideally like a tire that offers unstoppable traction anywhere in dirt and rocks plus a quiet, smooth highway ride. We can dream.

    However, modern tire designs have advanced substantially in the last decade or so, and we can now get some high-performance tires that handle many of these conditions quite well. Last spring, Yokohama introduced its latest off-road tire, the Geolandar M/T G003. It is the company’s most aggressive off-road tire, available in 35 sizes. The tread is designed with advanced pitch variation to help minimize highway noise while maintaining quality traction bite. The rubber uses a new triple-polymer compound for improved tread life.

    On the off-road side of things, the G003 uses a variety of tread features to gain traction on loose surfaces. Large unidirectional blocks with high voiding areas expose a lot of rubber to the terrain and help shed mud. There is also factory siping in the blocks and added sidewall biters. For trail protection, the tires have a sturdy sidewall protection from Yokohama’s Geo-Shield technology, one feature of which is proprietary three-ply construction on D- and E-rated tires.

    We recently installed a set of 37x12.50R17 Geolandar M/Ts on our solid-axle Tacoma trail truck. On 9-inch-wide wheels we found the unloaded diameter of these tires to be right at 36.75 inches, as cited in the Yokohama specs. Tread width is listed at 10.2 inches, and weight is a reasonable 76 pounds. These are Load Range D tires and seem well-suited for a rig like ours on up to a fullsize truck that is not too heavily loaded.

    One of the first things we noticed when we started driving on them is that they are quiet for a mud tire. Who can really complain about that? The new rubber tracked well on the road, and the tires felt round and smooth. Dry and wet pavement stopping was very acceptable for a tire of this nature, and overall we were pleased with their road manners.

    We have nearly 5,000 miles on our tires to date, and well over 1,200 of those are off-road miles covering a variety of Southwestern terrain. We were pleased that we had no flats, cuts, or sidewall bulging during our testing of the tires even after significantly crawling them over sandstone, boulders, and shale-like rock.

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    If you're looking for an aggressive, radial mud tire that will spend a good bit of time on the street, the Geolandar M/T might be the tire for you. The company is confident enough in the tires’ ability to satisfy customers that they come with a 30-day-trial guarantee. The G003 is a solid mud-terrain tire in the dirt that's also well behaved on the highway.

    Tire Specifications

    Yokohama Geolandar M/T G003
    Size Tested: 37x12.50R17LT
    Type: Mud-Terrain
    Load Range: D
    Maximum Load (lb): 3,525 @ 50 psi
    Sidewall Construction: 3-ply
    Approved Rim Width (in): 8.5-11
    Tread Depth (in): 21/32
    Tread Width (in): 10.2
    Section Width (in): 13.1
    Overall Diameter (in): 36.8
    Weight (lb): 76.1
    Sizes Available: 35 sizes ranging from LT235/75R15 to 37 inches for wheel diameters of 15 to 20 inches.