Yeah they are mud tires. They hum a little on the highway but nothing like a super swamper or a cheap mud tire these are actually a decent tire on the street i actually went back with an a/t when i changed wheels i loved the STT and got compliments ALL the time on the tires but im on the road so much and never in the mud and any mud tire on the street isnt the best for mileage but rotate em religously and check your air ive got right around 40,000 also the only other tire i might compare this one to is the toyo M/T but its reaaally pricey and no white letters
