The proper amount of fall off should verify that the bearings are not too tight.
There are no timing belts on a Suzuki GS1000GL. That would be a Honda GL1000 or Goldwing.I wonder what the front end feels like with the front wheel raised off the ground. Is it "notchy"? Damaged bearings?
Change your timing belts!
jag13 wins a new plastic Spork with it's own personal holder! A friend of mine came over and we both went thru the bike yesterday. I did check it just after I got the bike, but the bearings were loose on the swing arm. Today, as I sat on my antique upside down milk crate, I was going thru the steps I needed to take for the removal of the swing arm. Then I had a thought. Bearings don't just die. They will give you a warning that they need attention. And in less than a month, with very little riding, they suddenly went bad? No. No way.Since the bars turn lock to lock free and smooth, my first thought was wheel bearings too (front OR rear). But it could also be rear swingarm bearings. Also loose spokes.
Thanks, Rick. It will come in very, very handy.Here is a manual for your bike. http://gsarchive.bwringer.com/mtsac/~cliff/storage/gs/GS1000.pdf
PDF page 160 has your swing arm torque spec. Here is the site I got it from. BikeCliff's Website It is a treasure trove of valuable information for Suzuki GS models and other general information that applies to most bikes.