I found a great price on Michelin Pilot Road 6 GT Tires from Sierra BMW. If you sign up for their newsletter, you'll get an additional discount after adding them to your cart. $440 a set!
 https://www.shopbmwmotorcycle.com/products/michelin-road-6-gt-sport-touring-120-70zr17
https://www.shopbmwmotorcycle.com/products/michelin-road-6-gt-sport-touring-190-55zr17