Everyone has their preference.  A lot of guys like Kenda, good & reasonably priced.  I like Metzlers because they last a long time.  Anything is better than the OEM tires.  Yeah, that tire is bigger than standard and the saddle bag supports might rub.  Just use allen/cap head bolts and you'll probably be ok.  Feel free to post more questions, good luck.

Thanks for the replies.  I tend to wear out tires long before they age.  My current scooter is an '08 with 40K miles.  I commute about 42 miles/day and ride pretty aggressively.  Not like an a-hole; just quick take-offs and "fun" cornering.  I hit 60 mph on pretty much every commute since the roads have 45 - 50 mph limits.

72 miles per day minimum. I run an old stock VS800 Dunlop Qualifier (picked 2 up on clearance for $36 each) and the bike had a Shinko 712F front when I bought it. The Dunlop I put on when the bike was still in Pine's stable... Good wet weather traction, great wet weather braking. I've put a bunch of miles on it in under 2 months, had 7157.5 at purchase, now has 9240 and change on it.

100/90-19F, 140/90-15R

My last set of Dunlops (D404) went over 40K miles on a Vulcan 800A, which is a good bit heavier and has a lot more power. Some Savage folks have found them to be lousy, but if ran at 40psi front and rear they are great tires. Get Made in USA or Made in Japan Dunlops ONLY... if the tire sidewall has Korea, China or Taiwan on it, demand your money back. The K-C-T made ones are garbage, no better than ChengShin, Maxxis or Shinko low end tire lines.

I will not be buying another Shinko 712F, it has a max sidewall rating of 33psi and is very soft. It won't last very long, already leaves a rubber dust trail on the sidewalk where I park at work.