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  • JP Magazine
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  • 4-Wheel & Off-Road
  • Four Wheeler

We test Mickey Thompson’s new Deegan 38 All-Terrain

Posted in How To: Wheels Tires on November 29, 2017
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Brian Deegan is many things. X Games gold medalist. Metal Mulisha founder. Freestyle motocross pioneer. Short course racing champion. These credentials motivated Mickey Thompson to sponsor Deegan and even create a Deegan line of tires and wheels. They started with the Deegan 38 Mud-Terrain tire, which was just as tough and aggressive as Deegan himself. The guy has another side though that is rarely seen. Loyal husband, dedicated father, and successful businessman. That person is best represented by Mickey Thompson’s latest offering: the Deegan 38 All-Terrain.

Hear us out. While not as aggressive as its Mud-Terrain sibling, the new Deegan 38 All-Terrain shares the same DNA that makes the Deegan 38 Mud-Terrain so tough, but with increased tread life and decreased noise for vehicles that spend more time on the pavement than in the dirt. This is the case for our 2014 Ram 3500, which is used to tow our rockcrawlers all over the country. The Ram isn’t a dedicated wheeler, but it does see plenty of dirt roads and snowy mountain passes on our adventures. These are the situations that the Mickey Thompson Deegan 38 All-Terrain were made for.

The “38” doesn’t refer to the tire diameter, but rather Brian Deegan’s race number. Mickey Thompson currently offers the Deegan 38 All-Terrain in over 30 sizes from 29-inch to 35-inch for rim diameters varying from 15-inch to 22-inch. LT sizes are backed by a 55,000 mile warranty and P Metric sizes come with a remarkable 60,000 mile tread wear warranty. We choose the LT295/70R18 size, which comes in a Load Range E that is perfectly suited to towing and is an inch taller than the factory size for our Ram to fills out the wheelwells nicely.

The Deegan 38 All-Terrains have done everything we have asked of them and never left us wishing for a more aggressive tire on our tow rig. After more than 5,000 miles, half of which have been with a trailer in tow, the tires show little to no signs of wear. The Mickey Thompson Deegan 38 All-Terrains may not have us doing DoubleNac IndianAir Backflips, but they have run smooth, reliable, and whisper quiet. This is a side of Brian Deegan that we could definitely get used to.

The Deegan 38 All-Terrain has proven to be a very versatile tire on our Ram 3500. This truck is used for everything from daily driving to ski trips in the mountains to towing a heavy trailer.
The void area on the Deegan 38 All-Terrain is comparable to other A/T tires on the market. The variable draft angles provide for plenty of biting edges and keep the tire quiet throughout its lifespan.
The theme with the Deegan 38 All-Terrain is a more subdued version of the Mud-Terrain, so it is no surprise that the tires have a toned-down version of Mickey Thompson’s legendary Sidebiters.
Generous siping allows each individual tread block to run cooler on the road and conform to the terrain off-road. The siping also evacuates water to make the Deegan 38 All-Terrain stable and confident on wet and icy roads.
The tread compound on the Deegan 38 All-Terrain is silica-reinforced for excellent cut and chip resistance. That doesn’t mean that they will last 50,000 miles if you are peeling out all of the time, but it is valuable if you spend time on slick boat ramps or towing on dirt roads where wheel spin is a fact of life.
The Deegan 38 All-Terrain tires took incredibly little weight to balance (1.25 ounces on average), a testament to the excellent quality control exhibited by Mickey Thompson’s line of tires.

MAKE- Mickey Thompson
MODEL- Deegan 38 All-Terrain
SIZE TESTED- 295/70R18
TYPE- All Terrain
MAXIMUM LOAD (LB)- 4,080 lbs @ 80 psi
TREAD DEPTH (IN) – 17/32


Mickey Thompson Performance Tires & Wheels
Stow, OH 44224

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