@ Dave - Thanks for the helpful link! I have the Dunlop on the front, my Suzuki dealer had it on clearance when I needed to replace the front for inspection. I got a good price on it then and it made a big improvement over the dry rotted stock tire it replaced. Should I get the same for the back tire so they match? Or should I get the screw proof kind instead?

@ Gary_in_NJ - I agree, it's past due. It came with the bike when I bought it so no telling how old or how many miles it is.
@ justin_o_guy2 - I know that spot. And then there's the shoulders of roads that collect all manner of dropped hardware, nails, glass, roadkill, oil etc. etc.
I always make a point of pulling over into parking lots if I need to quick stop for whatever reason.
@ ohiomoto - I'll look into the Kenda Karma's since you recommended them. I used to run Kenda Vipers on my trike back in the late 80's and found them good for the varied surfaces I rode it on But noticed asphalt really chewed them up. On my Hybrid I need to ride it pretty far on roads to get to the parks with trails. Those trails are a mix of hard pack, gravel, soft raw dirt with tons of rocks and I also have a penchant for going off-trail and just trail blazing through the woods where I can get away with it. It would be so nice if somebody made as tire that could get traction on wet leaves. Haven't found that yet.
I'm interested in replacing my twist shifters too. any suggestions for alternatives there?
Oh look a review of the Karma's.
http://www.bikemag.com/blog/kenda_karma_dtc_mountain_bike_tire_review/#6hP8PE...Hmmm lacking in durability. I think this is my one legitimate complaint with Kenda. I find them lacking durability on bicycle, trike and motorcycle. Seems to be the brand's biggest flaw.
I think I'll look for something with better durability.