As the title says I'm wondering what sizes of tires will fit the stock rim of the gs. I am looking to get a set of pilot roads and can't find them in the 130/70-17 and 110/70-17 size. Any information helps.

Thanks,
Kord

I've run 110/70, 110/80, 120/70 front and 130/70, 130/80, 130/90, 140/70, 140/80, 150/60, 150/70 rear tires on my GSs on the stock 3.0 and 3.5" wheels.  All of the tires I've run have been fitments approved by the tires maker except the 150/60 rear.  I've run bias, bias belted, and radial tires.  No alterations are required to the bike for any of these sizes on stock wheels except the 150/60 and 150/70 which come close to or touch the brake rod and may require bending the rod a bit.

http://img.photobucket.com/albums/v443/jcp8832/GS500tirelogs_zpse04c1f44.jpg

Pilot Roads come in a 150/70 rear that would fit, it's the narrowest size available unless that's changed recently.  Michelin has a new Pilot Street Radial that comes in 110/70, 130/70, and 140/70 sizes to fit the GS500, Ninja 250, Ninja 500 bikes.  It's a sport touring type but doubt it would have the high mileage reputation of the Roads but they don't cost nearly as much either.

http://motorcycle.michelinman.com/tires/michelin-pilot-street-radial#dim

Jack knows!!