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Yokohama Geolandar X-AT Tire Test

From peak to pavement

We all want quiet, fuel-efficient, good-looking, multi-purpose tires that last. Not an easy list to check off completely, especially in the full-size diesel truck category. These weighty beasts test the capability of any contender vying for buyer satisfaction. After all, diesel trucks are workhorses, and their work shoes need to perform at that same level.

We showed up early for our appointment at Wheel Warehouse in Orange, California. The knowledgeable staff is eager to help and get you back on the road with the right wheels and tires. These guys are this author's go-to. They have all the state-of-the-art equipment and the best wheel and tire brands right there in-house. They got us in, up, and on our way. Thanks, guys.

Two of the checkboxes this review does not cover is snow/ice or towing. However, as you will see, many of the other categories that were tested gave us the indication that these Yokohama Geolandar X-ATs would perform at an elevated level in these situations.

Street and Freeway Commuting

The weekday commute with this 2007.5 Chevy 2500HD is 46 miles roundtrip, mostly freeway, and some residential streets. The outgoing set of rubber was much harder, so the on-road feel and reduced noise was immediately noticeable with this change. The Yokohama Geolandar X-ATs had a nice grip and the right amount of firmness with Yokohama's dual sidewall design. Several dead stop, freeway on-ramp tests involving boost launches in four-wheel drive proved exhilarating. We were immediately taken by the sticky nature of these tires. Freeway driving reveals these Yokohama Geolandar X-ATs connect you to the road directly through the steering wheel. They are responsive but not grabby. Some tires like to get into the rain grooves and you have to be mindful of your corrective response. The Yokohama Geolandar X-ATs stayed true in the lane and ignored the grabby grooves. Braking was also favorable and brought the heavy Chevy to a stop within impressive distances.

 

Rain

Wet pavement can change everything in an instant. We all know the perils of rain-slick roads adversely affected by migrating oil when a storm first starts. As water pools, the travel becomes potentially treacherous. The Yokohama Geolandar X-ATs gave us confidence in these situations. The unique tread pattern ushers water through the tire's contact patch, along with the sipes (slits atop the tread blocks) and specially designed grooves that help provide traction in rain, as well as on slick surfaces.

 

Off-Road

Equally capable off-road. The unique design of dynamic shoulder blocks, dual sidewall protectors, and Geo-Shield technology combine three sidewall plies to improve durability and puncture resistance. The Yokohama Geolandar X-ATs can be aired down to cushion goat trails and rocky washes. Be mindful of how low you let your PSI get. Without bead-locks, you're best to stay at 20 or above.

 

Warranty

Yokohama offers a 30-day trial with satisfaction guaranteed and a 45,000-mile treadwear limited warranty to the original buyer.

Final Thoughts

The Yokohama Geolandar X-AT is a stout tire. The 275/70R18s we tested weighed in at 55.8 lbs each, are 33.1 inches tall, and have an overall width of 11.7 inches. The Yokohama Geolandar X-ATs are an exceptional choice if you want something in between an all-terrain and a mud terrain tire. They are a good-looking, functional, well-designed tire that checks the right boxes. We had nothing but positive feedback from the tires themselves as we put them through their paces.