I am very close to buying a 990 Adv. I am thinking I'll want a 2nd wheel set with street oriented tires and on the stock 21/18" wheels I run dirt oriented tires. Who's got a similar set up ? What tires do you run? Does it freaking rail on the paved twisty stuff? What size rims for the 2nd street oriented set? 17" for both or 17" rear + 19" front? Going to the 19" front I discovered that the tire OD will 1" smaller so the front will drop 1/2". I need to look at suitable tires in 17" and see what OD change there will be compared to the stock 150 x 18" tire.