I have a Kenda on the rear of my 96 600S, 150/70/17, Kenda Cruiser. I didn't put it on, it came with the bike when I got it. The guy had just replaced it. Now the front.... I have a Pirelli Supercorsa Pro SC2 120/70/ZR17. Ha! what a combo there huh? Anyway, years of riding have taught me you can live with a little rear wheel slippage, but if the front goes, your doomed! I'm not a peg scraper so I have had no problems from the Kenda. I also don't ride in the wet unless I have to. Again I wouldn't push it to hard if you do go with it.
ps. the 120 Supercorsa juuuuuusts fits without rubing the fender. Can't go any bigger.