I have Kelly Safari MSR on my trac right now. I love them. I have had many Kelly tires in the past. Had some Kelly Safari street treads on my first 2wd F-150. Traded that truck on a 4wd F-150, came with Good Years, wore those out at 40,000 miles put Kelly Safari DTRs on it. They were great in the mud but too hard in snow, just slid around. After 50,000 miles on those, put on Safari MSRs. Great compromise for mud and snow traction. They are loud on the highway though. Doesn't bother me, I like the noise. The DTRs were really loud. After the Good Year's on my 02 trac crapped out, put on my trusty Safari MSRs.