I am selling a set of Bridgestone BATTLAX tires bought for a GS500, but my son sold his bike and they were never mounted.  Front:110-70-17. Rear:140-70-17.  See my add on Dallas Craigslist. I'll knock off $25 for anyone who mentions GSTwins  site.  http://dallas.craigslist.org/dal/mpo/4906240530.html  -I am not shipping at this time.
-Matthew