I have noticed that my Goodyear GSA's aren't looking too good after 20k miles, pretty disapointed. I also have two small leaks, in two different tires. I would like a set of tires which have very long tread life, and perform good off road. I do not not care about road noise. I was thinking about BFG MT's or AT's. Almost all of my driving is on road, but I have heard that the BFG MT last a really long time. Should I get a harder rubber tire for a longer tread life? Any suggestions? Thanks.