Mickey Thompson Deegan 38™. The Mickey Thompson Deegan 38™ Mud Terrain Tire is the tire you want on your Wrangler when you go mudding. Designed in collaboration with racing legend Brian Deegan, the all-purpose mud terrain Mickey Thompson Deegan 38™ Tire was built with one goal in mind. To give you the absolute best off-road tire possible, so you can dig into the muddiest trails with confidence.
Aggressive Traction. The Deegan 38™ Mud Terrain Tire was made to be one of the best performing off-road tires on the market for your Wrangler, and they do just that. Featuring excellent lug adaptability and a large contact area, providing great traction and stability for your drives both off-road and on the track. In addition to that, the fierce and stylish design will definitely give your Wrangler an aggressive appearance.
Quality Construction. The Deegan 38™ is constructed from a long-life compound for a more durable off-road tire and features distinctive “DEEGAN 38” lettering embossed on the sides to make them stand out in the crowd. The Tire is made with generous siping to provide excellent performance in any season of the year in addition to wide outer void sections which help to push mud and loose dirt out of the tire surface keeping the tread clean. The inner voids are tighter, making for less noise during your daily commute.Application.
The Mickey Thompson Deegan 38 Mud Terrain Tire is designed for use on 1987-2019 Jeep Wrangler YJ, TJ, JK and JL models. Please choose your size from the ordering options above. Sold individually.
What is the best gear ratio to run for larger tires? When you increase the diameter of your tires, your vehicle's engine has to work harder to turn them. Naturally, this will lead to increased fuel consumption and reduced performance. So, when upgrading to a set of larger tires you should re-gear your rig to regain this lost acceleration, performance and fuel economy.
Find your original tire size and gear ratio using the chart listed below, the intersection should be your approximate RPMs at 65 MPH. Then find your new tire size and follow it across to the closest RPM to your original tires, this will be your gear ratio choice.
This chart is based on driving at 65 MPH with a 1:1 gear ratio and a manual transmission in 4th gear. Please note if your vehicle is equipped with an automatic transmission your RPMs will be higher due to normal transmission and the torque converter slippage. In overdrive your RPMs will be approximately 15% to 30% less than indicated.
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CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov