Your gonna get alot of different answers on this everyone has their favorite but that dont mean they will work for you. I run milestar patagonia m/t 33" on my truck, i went through quite a few brands of a/t tires before i found they wouldnt work for me. Milestar dont have 37" unless you have 20" or larger wheels though.
They work great in everything offroad and have really good manners on the street for m/t's and they are priced just right.
Designed to be at home rock crawling, mud bogging, or a casual drive through mountain trails, the Patagonia MT can overcome any terrain.
www.milestartires.com