Sure thing Promed....
One of the main reasons I went with this tire besides the obvious offroad caspabilities was on-road performance. I work in Real Estate so I do a LOT of street driving. So for work, road noise was a big factor I had to consider because I am constantly driving around clients. The road noise is basically un-noticeable. A lot of the "howling" that you hear about doesn't occur, even at highway speeds. I'm guessing it is due to the tread pattern.
Bear in mind I only have about 15k on these tires so far. They may get louder as the tread wears but I received a lot of feedback from some other folks who have had these and they told me the noise doesn't get nearly as bad as the BFG All-Terrains for example.
In terms of handling, they are wonderful. I don't feel any roll or hovering when going around corners. With some larger and wider mud tires you feel like you are floating all over the road. The STT's tread pattern is square much like the Toyo Open Country MTR's. Both tires are pretty well known for keeping a straight line unlike other more rounded tires. Since it is 3-plies (2 radial polyester body plys and an angled body ply) the sidewalls are very rigid which eliminates any hovering back and forth at highway speeds.
One thing that I really didn't pay much mind to when I purchased them were the sipes inbetween the tread lugs. The Cooper website refers to them as "tapered stone ejectors". These extra rubber stips in between the treads keep mud from getting stuck inbetween the treads. It has been extremely beneficial because when you get back onto the street from being off-road, these sipes cause all of the mud to completely wipe clean out of your treads within seconds, leaving clean tires.
Last but not least, the rubber compound is made up of a harder rubber. Unlike the Wrangler MTR's which are made up of a softer rubber, thus wearing prematurely....the STT's are a little harder. This increases the life of your tire. Like I said earlier, I have about 15k on the tires so far and they barely look like they have worn down at all.
I hope this helped. It is really all I can think of right now. Bottom line, I recommend these tires to anyone, period.