I have a '96 xr600r that is ridden entirely on the street, mostly around town. I'm trying to find a tire that has great street grip with good wet and cold weather traction, but it has to fit my stock rims. I have a few questions: 1. Can I run tubeless tires on my rims and still seal the air? 2. Can I run tubeless tires with tubes in them, or am I limited to only tube-type tires? 3. I plan to keep the stock tire sizes, but are there any STREET advantages to changing the tire size (in the scope that the stock rims will fit them)? I ride in the rain quite a bit, and the DOT knobbies don't like it very much.