The Pirelli Route 66 tires can be had at a good price from Dennis Kirk. The front,100/90/19 is $66.99   rear 130/90/15 is $80.99 free shipping. Went for a ride today and after about 20 miles, I foolishly began to give no thought that these are brand new tires, and started to lean far into turns. Nothing but good results. If asked how the bike handled before, my answer would be " Ok, I guess ". Now it's a firm "Good". Going from a 140 rear to the 130 made the bike feel perfectly neutral, with no feeling of wanting to plow straight. I'm using 1 inch longer shocks, and am happy with the tires.

Had the same shocks on with the old IRC  tires .  I'll  find out about the rain soon enough. In the past, on different bikes, I would actually catch myself going faster in the rain because the tires felt so good. Those were Avon Roadrunners, and Metzeler ME88's. I've had Dunlop's that were fine when dry, not so much wet.  Having the best of both worlds is great. Time will tell.